make og images look nice

use readline instead
replace spinner, use disk cache for fonts
2025-12-12 23:57:58 +01:00 · 2025-03-13 10:17:19 -07:00 · 2025-03-13 08:46:55 -07:00 · 2025-03-13 08:38:16 -07:00 · 2025-03-12 22:56:59 -07:00 · 2025-03-12 22:26:39 -07:00
41 changed files with 1254 additions and 1165 deletions
--- a/docs/advanced/making
+++ b/docs/advanced/making
@@ -25,10 +25,11 @@ The following sections will go into detail for what methods can be implemented f
 - `BuildCtx` is defined in `quartz/ctx.ts`. It consists of
  - `argv`: The command line arguments passed to the Quartz [[build]] command
  - `cfg`: The full Quartz [[configuration]]
-  - `allSlugs`: a list of all the valid content slugs (see [[paths]] for more information on what a `ServerSlug` is)
+  - `allSlugs`: a list of all the valid content slugs (see [[paths]] for more information on what a slug is)
 - `StaticResources` is defined in `quartz/resources.tsx`. It consists of
  - `css`: a list of CSS style definitions that should be loaded. A CSS style is described with the `CSSResource` type which is also defined in `quartz/resources.tsx`. It accepts either a source URL or the inline content of the stylesheet.
  - `js`: a list of scripts that should be loaded. A script is described with the `JSResource` type which is also defined in `quartz/resources.tsx`. It allows you to define a load time (either before or after the DOM has been loaded), whether it should be a module, and either the source URL or the inline content of the script.
  - `additionalHead`: a list of JSX elements or functions that return JSX elements to be added to the `<head>` tag of the page. Functions receive the page's data as an argument and can conditionally render elements.
 ## Transformers
@@ -234,7 +235,7 @@ export type WriteOptions = (data: {
  // the build context
  ctx: BuildCtx
  // the name of the file to emit (not including the file extension)
-  slug: ServerSlug
+  slug: FullSlug
  // the file extension
  ext: `.${string}` | ""
  // the file content to add
--- a/docs/features/explorer.md
+++ b/docs/features/explorer.md
@@ -27,12 +27,10 @@ Component.Explorer({
  folderClickBehavior: "collapse", // what happens when you click a folder ("link" to navigate to folder page on click or "collapse" to collapse folder on click)
  folderDefaultState: "collapsed", // default state of folders ("collapsed" or "open")
  useSavedState: true, // whether to use local storage to save "state" (which folders are opened) of explorer
-  // Sort order: folders first, then files. Sort folders and files alphabetically
+  // omitted but shown later
-  sortFn: (a, b) => {
+  sortFn: ...,
-    ... // default implementation shown later
+  filterFn: ...,
-  },
+  mapFn: ...,
  filterFn: filterFn: (node) => node.name !== "tags", // filters out 'tags' folder
  mapFn: undefined,
  // what order to apply functions in
  order: ["filter", "map", "sort"],
 })
@@ -54,17 +52,23 @@ Want to customize it even more?
 ## Advanced customization
 This component allows you to fully customize all of its behavior. You can pass a custom `sort`, `filter` and `map` function.
-All functions you can pass work with the `FileNode` class, which has the following properties:
+All functions you can pass work with the `FileTrieNode` class, which has the following properties:
-```ts title="quartz/components/ExplorerNode.tsx" {2-5}
+```ts title="quartz/components/Explorer.tsx"
-export class FileNode {
+class FileTrieNode {
-  children: FileNode[]  // children of current node
+  isFolder: boolean
-  name: string  // last part of slug
+  children: Array<FileTrieNode>
-  displayName: string // what actually should be displayed in the explorer
+  data: ContentDetails | null
-  file: QuartzPluginData | null // if node is a file, this is the file's metadata. See `QuartzPluginData` for more detail
+}
-  depth: number // depth of current node
+```
-  ... // rest of implementation
+```ts title="quartz/plugins/emitters/contentIndex.tsx"
 export type ContentDetails = {
  slug: FullSlug
  title: string
  links: SimpleSlug[]
  tags: string[]
  content: string
 }
 ```
@@ -74,15 +78,14 @@ Every function you can pass is optional. By default, only a `sort` function will
 // Sort order: folders first, then files. Sort folders and files alphabetically
 Component.Explorer({
  sortFn: (a, b) => {
-    if ((!a.file && !b.file) || (a.file && b.file)) {
+    if ((!a.isFolder && !b.isFolder) || (a.isFolder && b.isFolder)) {
      // sensitivity: "base": Only strings that differ in base letters compare as unequal. Examples: a ≠ b, a = á, a = A
      // numeric: true: Whether numeric collation should be used, such that "1" < "2" < "10"
      return a.displayName.localeCompare(b.displayName, undefined, {
        numeric: true,
        sensitivity: "base",
      })
    }
-    if (a.file && !b.file) {
+
    if (!a.isFolder && b.isFolder) {
      return 1
    } else {
      return -1
@@ -100,41 +103,23 @@ For more information on how to use `sort`, `filter` and `map`, you can check [Ar
 Type definitions look like this:
 ```ts
-sortFn: (a: FileNode, b: FileNode) => number
+type SortFn = (a: FileTrieNode, b: FileTrieNode) => number
-filterFn: (node: FileNode) => boolean
+type FilterFn = (node: FileTrieNode) => boolean
-mapFn: (node: FileNode) => void
+type MapFn = (node: FileTrieNode) => void
 ```
 > [!tip]
 > You can check if a `FileNode` is a folder or a file like this:
 >
 > ```ts
 > if (node.file) {
 >   // node is a file
 > } else {
 >   // node is a folder
 > }
 > ```
 ## Basic examples
 These examples show the basic usage of `sort`, `map` and `filter`.
 ### Use `sort` to put files first
-Using this example, the explorer will alphabetically sort everything, but put all **files** above all **folders**.
+Using this example, the explorer will alphabetically sort everything.
 ```ts title="quartz.layout.ts"
 Component.Explorer({
  sortFn: (a, b) => {
-    if ((!a.file && !b.file) || (a.file && b.file)) {
+    return a.displayName.localeCompare(b.displayName)
      return a.displayName.localeCompare(b.displayName)
    }
    if (a.file && !b.file) {
      return -1
    } else {
      return 1
    }
  },
 })
 ```
@@ -146,43 +131,43 @@ Using this example, the display names of all `FileNodes` (folders + files) will
 ```ts title="quartz.layout.ts"
 Component.Explorer({
  mapFn: (node) => {
-    node.displayName = node.displayName.toUpperCase()
+    return (node.displayName = node.displayName.toUpperCase())
  },
 })
 ```
 ### Remove list of elements (`filter`)
-Using this example, you can remove elements from your explorer by providing an array of folders/files using the `omit` set.
+Using this example, you can remove elements from your explorer by providing an array of folders/files to exclude.
 Note that this example filters on the title but you can also do it via slug or any other field available on `FileTrieNode`.
 ```ts title="quartz.layout.ts"
 Component.Explorer({
  filterFn: (node) => {
    // set containing names of everything you want to filter out
    const omit = new Set(["authoring content", "tags", "hosting"])
-    return !omit.has(node.name.toLowerCase())
+    return !omit.has(node.data.title.toLowerCase())
  },
 })
 ```
 You can customize this by changing the entries of the `omit` set. Simply add all folder or file names you want to remove.
 ### Remove files by tag
-You can access the frontmatter of a file by `node.file?.frontmatter?`. This allows you to filter out files based on their frontmatter, for example by their tags.
+You can access the tags of a file by `node.data.tags`.
 ```ts title="quartz.layout.ts"
 Component.Explorer({
  filterFn: (node) => {
    // exclude files with the tag "explorerexclude"
-    return node.file?.frontmatter?.tags?.includes("explorerexclude") !== true
+    return node.data.tags.includes("explorerexclude") !== true
  },
 })
 ```
 ### Show every element in explorer
-To override the default filter function that removes the `tags` folder from the explorer, you can set the filter function to `undefined`.
+By default, the explorer will filter out the `tags` folder.
 To override the default filter function, you can set the filter function to `undefined`.
 ```ts title="quartz.layout.ts"
 Component.Explorer({
@@ -194,10 +179,12 @@ Component.Explorer({
 > [!tip]
 > When writing more complicated functions, the `layout` file can start to look very cramped.
-> You can fix this by defining your functions in another file.
+> You can fix this by defining your sort functions outside of the component
 > and passing it in.
 >
-> ```ts title="functions.ts"
+> ```ts title="quartz.layout.ts"
 > import { Options } from "./quartz/components/ExplorerNode"
 >
 > export const mapFn: Options["mapFn"] = (node) => {
 >   // implement your function here
 > }
@@ -207,16 +194,12 @@ Component.Explorer({
 > export const sortFn: Options["sortFn"] = (a, b) => {
 >   // implement your function here
 > }
 > ```
 >
 > You can then import them like this:
 >
 > ```ts title="quartz.layout.ts"
 > import { mapFn, filterFn, sortFn } from "./functions.ts"
 > Component.Explorer({
->   mapFn: mapFn,
+>   // ... your other options
->   filterFn: filterFn,
+>   mapFn,
->   sortFn: sortFn,
+>   filterFn,
 >   sortFn,
 > })
 > ```
@@ -227,93 +210,11 @@ To add emoji prefixes (📁 for folders, 📄 for files), you could use a map fu
 ```ts title="quartz.layout.ts"
 Component.Explorer({
  mapFn: (node) => {
-    // dont change name of root node
+    if (node.isFolder) {
-    if (node.depth > 0) {
+      node.displayName = "📁 " + node.displayName
-      // set emoji for file/folder
+    } else {
-      if (node.file) {
+      node.displayName = "📄 " + node.displayName
        node.displayName = "📄 " + node.displayName
      } else {
        node.displayName = "📁 " + node.displayName
      }
    }
  },
 })
 ```
 ### Putting it all together
 In this example, we're going to customize the explorer by using functions from examples above to [[#Add emoji prefix | add emoji prefixes]], [[#remove-list-of-elements-filter| filter out some folders]] and [[#use-sort-to-put-files-first | sort with files above folders]].
 ```ts title="quartz.layout.ts"
 Component.Explorer({
  filterFn: sampleFilterFn,
  mapFn: sampleMapFn,
  sortFn: sampleSortFn,
  order: ["filter", "sort", "map"],
 })
 ```
 Notice how we customized the `order` array here. This is done because the default order applies the `sort` function last. While this normally works well, it would cause unintended behavior here, since we changed the first characters of all display names. In our example, `sort` would be applied based off the emoji prefix instead of the first _real_ character.
 To fix this, we just changed around the order and apply the `sort` function before changing the display names in the `map` function.
 ### Use `sort` with pre-defined sort order
 Here's another example where a map containing file/folder names (as slugs) is used to define the sort order of the explorer in quartz. All files/folders that aren't listed inside of `nameOrderMap` will appear at the top of that folders hierarchy level.
 It's also worth mentioning, that the smaller the number set in `nameOrderMap`, the higher up the entry will be in the explorer. Incrementing every folder/file by 100, makes ordering files in their folders a lot easier. Lastly, this example still allows you to use a `mapFn` or frontmatter titles to change display names, as it uses slugs for `nameOrderMap` (which is unaffected by display name changes).
 ```ts title="quartz.layout.ts"
 Component.Explorer({
  sortFn: (a, b) => {
    const nameOrderMap: Record<string, number> = {
      "poetry-folder": 100,
      "essay-folder": 200,
      "research-paper-file": 201,
      "dinosaur-fossils-file": 300,
      "other-folder": 400,
    }
    let orderA = 0
    let orderB = 0
    if (a.file && a.file.slug) {
      orderA = nameOrderMap[a.file.slug] || 0
    } else if (a.name) {
      orderA = nameOrderMap[a.name] || 0
    }
    if (b.file && b.file.slug) {
      orderB = nameOrderMap[b.file.slug] || 0
    } else if (b.name) {
      orderB = nameOrderMap[b.name] || 0
    }
    return orderA - orderB
  },
 })
 ```
 For reference, this is how the quartz explorer window would look like with that example:
 ```
 📖 Poetry Folder
 📑 Essay Folder
    ⚗️ Research Paper File
 🦴 Dinosaur Fossils File
 🔮 Other Folder
 ```
 And this is how the file structure would look like:
 ```
 index.md
 poetry-folder
    index.md
 essay-folder
    index.md
    research-paper-file.md
 dinosaur-fossils-file.md
 other-folder
    index.md
 ```
--- a/docs/features/social
+++ b/docs/features/social
@@ -2,400 +2,18 @@
 title: "Social Media Preview Cards"
 ---
-A lot of social media platforms can display a rich preview for your website when sharing a link (most notably, a cover image, a title and a description). Quartz automatically handles most of this for you with reasonable defaults, but for more control, you can customize these by setting [[social images#Frontmatter Properties]].
+A lot of social media platforms can display a rich preview for your website when sharing a link (most notably, a cover image, a title and a description).
-Quartz can also dynamically generate and use new cover images for every page to be used in link previews on social media for you. To get started with this, set `generateSocialImages: true` in `quartz.config.ts`.
+
 Quartz can also dynamically generate and use new cover images for every page to be used in link previews on social media for you.
 ## Showcase
-After enabling `generateSocialImages` in `quartz.config.ts`, the social media link preview for [[authoring content | Authoring Content]] looks like this:
+After enabling the [[CustomOgImages]] emitter plugin, the social media link preview for [[authoring content | Authoring Content]] looks like this:
 | Light                               | Dark                               |
 | ----------------------------------- | ---------------------------------- |
 | ![[social-image-preview-light.png]] | ![[social-image-preview-dark.png]] |
-For testing, it is recommended to use [opengraph.xyz](https://www.opengraph.xyz/) to see what the link to your page will look like on various platforms (more info under [[social images#local testing]]).
+## Configuration
-## Customization
+This functionality is provided by the [[CustomOgImages]] plugin. See the plugin page for customization options.
 You can customize how images will be generated in the quartz config.
 For example, here's what the default configuration looks like if you set `generateSocialImages: true`:
 ```typescript title="quartz.config.ts"
 generateSocialImages: {
  colorScheme: "lightMode", // what colors to use for generating image, same as theme colors from config, valid values are "darkMode" and "lightMode"
  width: 1200, // width to generate with (in pixels)
  height: 630, // height to generate with (in pixels)
  excludeRoot: false, // wether to exclude "/" index path to be excluded from auto generated images (false = use auto, true = use default og image)
 }
 ```
 ---
 ### Frontmatter Properties
 > [!tip] Hint
 >
 > Overriding social media preview properties via frontmatter still works even if `generateSocialImages` is disabled.
 The following properties can be used to customize your link previews:
 | Property            | Alias            | Summary                             |
 | ------------------- | ---------------- | ----------------------------------- |
 | `socialDescription` | `description`    | Description to be used for preview. |
 | `socialImage`       | `image`, `cover` | Link to preview image.              |
 The `socialImage` property should contain a link to an image relative to `quartz/static`. If you have a folder for all your images in `quartz/static/my-images`, an example for `socialImage` could be `"my-images/cover.png"`.
 > [!info] Info
 >
 > The priority for what image will be used for the cover image looks like the following: `frontmatter property > generated image (if enabled) > default image`.
 >
 > The default image (`quartz/static/og-image.png`) will only be used as a fallback if nothing else is set. If `generateSocialImages` is enabled, it will be treated as the new default per page, but can be overwritten by setting the `socialImage` frontmatter property for that page.
 ---
 ### Fully customized image generation
 You can fully customize how the images being generated look by passing your own component to `generateSocialImages.imageStructure`. This component takes html/css + some page metadata/config options and converts it to an image using [satori](https://github.com/vercel/satori). Vercel provides an [online playground](https://og-playground.vercel.app/) that can be used to preview how your html/css looks like as a picture. This is ideal for prototyping your custom design.
 It is recommended to write your own image components in `quartz/util/og.tsx` or any other `.tsx` file, as passing them to the config won't work otherwise. An example of the default image component can be found in `og.tsx` in `defaultImage()`.
 > [!tip] Hint
 >
 > Satori only supports a subset of all valid CSS properties. All supported properties can be found in their [documentation](https://github.com/vercel/satori#css).
 Your custom image component should have the `SocialImageOptions["imageStructure"]` type, to make development easier for you. Using a component of this type, you will be passed the following variables:
 ```ts
 imageStructure: (
  cfg: GlobalConfiguration, // global Quartz config (useful for getting theme colors and other info)
  userOpts: UserOpts, // options passed to `generateSocialImage`
  title: string, // title of current page
  description: string, // description of current page
  fonts: SatoriOptions["fonts"], // header + body font
 ) => JSXInternal.Element
 ```
 Now, you can let your creativity flow and design your own image component! For reference and some cool tips, you can check how the markup for the default image looks.
 > [!example] Examples
 >
 > Here are some examples for markup you may need to get started:
 >
 > - Get a theme color
 >
 >   `cfg.theme.colors[colorScheme].<colorName>`, where `<colorName>` corresponds to a key in `ColorScheme` (defined at the top of `quartz/util/theme.ts`)
 >
 > - Use the page title/description
 >
 >   `<p>{title}</p>`/`<p>{description}</p>`
 >
 > - Use a font family
 >
 >   Detailed in the Fonts chapter below
 ---
 ### Fonts
 You will also be passed an array containing a header and a body font (where the first entry is header and the second is body). The fonts matches the ones selected in `theme.typography.header` and `theme.typography.body` from `quartz.config.ts` and will be passed in the format required by [`satori`](https://github.com/vercel/satori). To use them in CSS, use the `.name` property (e.g. `fontFamily: fonts[1].name` to use the "body" font family).
 An example of a component using the header font could look like this:
 ```tsx title="socialImage.tsx"
 export const myImage: SocialImageOptions["imageStructure"] = (...) => {
  return <p style={{ fontFamily: fonts[0].name }}>Cool Header!</p>
 }
 ```
 > [!example]- Local fonts
 >
 > For cases where you use a local fonts under `static` folder, make sure to set the correct `@font-face` in `custom.scss`
 >
 > ```scss title="custom.scss"
 > @font-face {
 >   font-family: "Newsreader";
 >   font-style: normal;
 >   font-weight: normal;
 >   font-display: swap;
 >   src: url("/static/Newsreader.woff2") format("woff2");
 > }
 > ```
 >
 > Then in `quartz/util/og.tsx`, you can load the satori fonts like so:
 >
 > ```tsx title="quartz/util/og.tsx"
 > const headerFont = joinSegments("static", "Newsreader.woff2")
 > const bodyFont = joinSegments("static", "Newsreader.woff2")
 >
 > export async function getSatoriFont(cfg: GlobalConfiguration): Promise<SatoriOptions["fonts"]> {
 >   const headerWeight: FontWeight = 700
 >   const bodyWeight: FontWeight = 400
 >
 >   const url = new URL(`https://${cfg.baseUrl ?? "example.com"}`)
 >
 >   const [header, body] = await Promise.all(
 >     [headerFont, bodyFont].map((font) =>
 >       fetch(`${url.toString()}/${font}`).then((res) => res.arrayBuffer()),
 >     ),
 >   )
 >
 >   return [
 >     { name: cfg.theme.typography.header, data: header, weight: headerWeight, style: "normal" },
 >     { name: cfg.theme.typography.body, data: body, weight: bodyWeight, style: "normal" },
 >   ]
 > }
 > ```
 >
 > This font then can be used with your custom structure
 ### Local testing
 To test how the full preview of your page is going to look even before deploying, you can forward the port you're serving quartz on. In VSCode, this can easily be achieved following [this guide](https://code.visualstudio.com/docs/editor/port-forwarding) (make sure to set `Visibility` to `public` if testing on external tools like [opengraph.xyz](https://www.opengraph.xyz/)).
 If you have `generateSocialImages` enabled, you can check out all generated images under `public/static/social-images`.
 ## Technical info
 Images will be generated as `.webp` files, which helps to keep images small (the average image takes ~`19kB`). They are also compressed further using [sharp](https://sharp.pixelplumbing.com/).
 When using images, the appropriate [Open Graph](https://ogp.me/) and [Twitter](https://developer.twitter.com/en/docs/twitter-for-websites/cards/guides/getting-started) meta tags will be set to ensure they work and look as expected.
 ## Examples
 Besides the template for the default image generation (found under `quartz/util/og.tsx`), you can also add your own! To do this, you can either edit the source code of that file (not recommended) or create a new one (e.g. `customSocialImage.tsx`, source shown below).
 After adding that file, you can update `quartz.config.ts` to use your image generation template as follows:
 ```ts
 // Import component at start of file
 import { customImage } from "./quartz/util/customSocialImage.tsx"
 // In main config
 const config: QuartzConfig = {
  ...
  generateSocialImages: {
    ...
    imageStructure: customImage, // tells quartz to use your component when generating images
  },
 }
 ```
 The following example will generate images that look as follows:
 | Light                                      | Dark                                      |
 | ------------------------------------------ | ----------------------------------------- |
 | ![[custom-social-image-preview-light.png]] | ![[custom-social-image-preview-dark.png]] |
 This example (and the default template) use colors and fonts from your theme specified in the quartz config. Fonts get passed in as a prop, where `fonts[0]` will contain the header font and `fonts[1]` will contain the body font (more info in the [[#fonts]] section).
 ```tsx
 import { SatoriOptions } from "satori/wasm"
 import { GlobalConfiguration } from "../cfg"
 import { SocialImageOptions, UserOpts } from "./imageHelper"
 import { QuartzPluginData } from "../plugins/vfile"
 export const customImage: SocialImageOptions["imageStructure"] = (
  cfg: GlobalConfiguration,
  userOpts: UserOpts,
  title: string,
  description: string,
  fonts: SatoriOptions["fonts"],
  fileData: QuartzPluginData,
 ) => {
  // How many characters are allowed before switching to smaller font
  const fontBreakPoint = 22
  const useSmallerFont = title.length > fontBreakPoint
  const { colorScheme } = userOpts
  return (
    <div
      style={{
        display: "flex",
        flexDirection: "row",
        justifyContent: "flex-start",
        alignItems: "center",
        height: "100%",
        width: "100%",
      }}
    >
      <div
        style={{
          display: "flex",
          alignItems: "center",
          justifyContent: "center",
          height: "100%",
          width: "100%",
          backgroundColor: cfg.theme.colors[colorScheme].light,
          flexDirection: "column",
          gap: "2.5rem",
          paddingTop: "2rem",
          paddingBottom: "2rem",
        }}
      >
        <p
          style={{
            color: cfg.theme.colors[colorScheme].dark,
            fontSize: useSmallerFont ? 70 : 82,
            marginLeft: "4rem",
            textAlign: "center",
            marginRight: "4rem",
            fontFamily: fonts[0].name,
          }}
        >
          {title}
        </p>
        <p
          style={{
            color: cfg.theme.colors[colorScheme].dark,
            fontSize: 44,
            marginLeft: "8rem",
            marginRight: "8rem",
            lineClamp: 3,
            fontFamily: fonts[1].name,
          }}
        >
          {description}
        </p>
      </div>
      <div
        style={{
          height: "100%",
          width: "2vw",
          position: "absolute",
          backgroundColor: cfg.theme.colors[colorScheme].tertiary,
          opacity: 0.85,
        }}
      />
    </div>
  )
 }
 ```
 > [!example]- Advanced example
 >
 > The following example includes a customized social image with a custom background and formatted date.
 >
 > ```typescript title="custom-og.tsx"
 > export const og: SocialImageOptions["Component"] = (
 >   cfg: GlobalConfiguration,
 >   fileData: QuartzPluginData,
 >   { colorScheme }: Options,
 >   title: string,
 >   description: string,
 >   fonts: SatoriOptions["fonts"],
 > ) => {
 >   let created: string | undefined
 >   let reading: string | undefined
 >   if (fileData.dates) {
 >     created = formatDate(getDate(cfg, fileData)!, cfg.locale)
 >   }
 >   const { minutes, text: _timeTaken, words: _words } = readingTime(fileData.text!)
 >   reading = i18n(cfg.locale).components.contentMeta.readingTime({
 >     minutes: Math.ceil(minutes),
 >   })
 >
 >   const Li = [created, reading]
 >
 >   return (
 >     <div
 >       style={{
 >         position: "relative",
 >         display: "flex",
 >         flexDirection: "row",
 >         alignItems: "flex-start",
 >         height: "100%",
 >         width: "100%",
 >         backgroundImage: `url("https://${cfg.baseUrl}/static/og-image.jpeg")`,
 >         backgroundSize: "100% 100%",
 >       }}
 >     >
 >       <div
 >         style={{
 >           position: "absolute",
 >           top: 0,
 >           left: 0,
 >           right: 0,
 >           bottom: 0,
 >           background: "radial-gradient(circle at center, transparent, rgba(0, 0, 0, 0.4) 70%)",
 >         }}
 >       />
 >       <div
 >         style={{
 >           display: "flex",
 >           height: "100%",
 >           width: "100%",
 >           flexDirection: "column",
 >           justifyContent: "flex-start",
 >           alignItems: "flex-start",
 >           gap: "1.5rem",
 >           paddingTop: "4rem",
 >           paddingBottom: "4rem",
 >           marginLeft: "4rem",
 >         }}
 >       >
 >         <img
 >           src={`"https://${cfg.baseUrl}/static/icon.jpeg"`}
 >           style={{
 >             position: "relative",
 >             backgroundClip: "border-box",
 >             borderRadius: "6rem",
 >           }}
 >           width={80}
 >         />
 >         <div
 >           style={{
 >             display: "flex",
 >             flexDirection: "column",
 >             textAlign: "left",
 >             fontFamily: fonts[0].name,
 >           }}
 >         >
 >           <h2
 >             style={{
 >               color: cfg.theme.colors[colorScheme].light,
 >               fontSize: "3rem",
 >               fontWeight: 700,
 >               marginRight: "4rem",
 >               fontFamily: fonts[0].name,
 >             }}
 >           >
 >             {title}
 >           </h2>
 >           <ul
 >             style={{
 >               color: cfg.theme.colors[colorScheme].gray,
 >               gap: "1rem",
 >               fontSize: "1.5rem",
 >               fontFamily: fonts[1].name,
 >             }}
 >           >
 >             {Li.map((item, index) => {
 >               if (item) {
 >                 return <li key={index}>{item}</li>
 >               }
 >             })}
 >           </ul>
 >         </div>
 >         <p
 >           style={{
 >             color: cfg.theme.colors[colorScheme].light,
 >             fontSize: "1.5rem",
 >             overflow: "hidden",
 >             marginRight: "8rem",
 >             textOverflow: "ellipsis",
 >             display: "-webkit-box",
 >             WebkitLineClamp: 7,
 >             WebkitBoxOrient: "vertical",
 >             lineClamp: 7,
 >             fontFamily: fonts[1].name,
 >           }}
 >         >
 >           {description}
 >         </p>
 >       </div>
 >     </div>
 >   )
 > }
 > ```
--- a/docs/layout-components.md
+++ b/docs/layout-components.md
@@ -0,0 +1,62 @@
 ---
 title: Higher-Order Layout Components
 ---
 Quartz provides several higher-order components that help with layout composition and responsive design. These components wrap other components to add additional functionality or modify their behavior.
 ## `Flex` Component
 The `Flex` component creates a [flexible box layout](https://developer.mozilla.org/en-US/docs/Web/CSS/flex) that can arrange child components in various ways. It's particularly useful for creating responsive layouts and organizing components in rows or columns.
 ```typescript
 type FlexConfig = {
  components: {
    Component: QuartzComponent
    grow?: boolean // whether component should grow to fill space
    shrink?: boolean // whether component should shrink if needed
    basis?: string // initial main size of the component
    order?: number // order in flex container
    align?: "start" | "end" | "center" | "stretch" // cross-axis alignment
    justify?: "start" | "end" | "center" | "between" | "around" // main-axis alignment
  }[]
  direction?: "row" | "row-reverse" | "column" | "column-reverse"
  wrap?: "nowrap" | "wrap" | "wrap-reverse"
  gap?: string
 }
 ```
 ### Example Usage
 ```typescript
 Component.Flex({
  components: [
    {
      Component: Component.Search(),
      grow: true, // Search will grow to fill available space
    },
    { Component: Component.Darkmode() }, // Darkmode keeps its natural size
  ],
  direction: "row",
  gap: "1rem",
 })
 ```
 ## `MobileOnly` Component
 The `MobileOnly` component is a wrapper that makes its child component only visible on mobile devices. This is useful for creating responsive layouts where certain components should only appear on smaller screens.
 ### Example Usage
 ```typescript
 Component.MobileOnly(Component.Spacer())
 ```
 ## `DesktopOnly` Component
 The `DesktopOnly` component is the counterpart to `MobileOnly`. It makes its child component only visible on desktop devices. This helps create responsive layouts where certain components should only appear on larger screens.
 ### Example Usage
 ```typescript
 Component.DesktopOnly(Component.TableOfContents())
 ```
--- a/docs/layout.md
+++ b/docs/layout.md
@@ -35,7 +35,9 @@ These correspond to following parts of the page:
 Quartz **components**, like plugins, can take in additional properties as configuration options. If you're familiar with React terminology, you can think of them as Higher-order Components.
-See [a list of all the components](component.md) for all available components along with their configuration options. You can also checkout the guide on [[creating components]] if you're interested in further customizing the behaviour of Quartz.
+See [a list of all the components](component.md) for all available components along with their configuration options. Additionally, Quartz provides several built-in higher-order components for layout composition - see [[layout-components]] for more details.
 You can also checkout the guide on [[creating components]] if you're interested in further customizing the behaviour of Quartz.
 ### Layout breakpoints
--- a/docs/plugins/CustomOgImages.md
+++ b/docs/plugins/CustomOgImages.md
@@ -0,0 +1,360 @@
 ---
 title: Custom OG Images
 tags:
  - feature/emitter
 ---
 The Custom OG Images emitter plugin generates social media preview images for your pages. It uses [satori](https://github.com/vercel/satori) to convert HTML/CSS into images, allowing you to create beautiful and consistent social media preview cards for your content.
 > [!note]
 > For information on how to add, remove or configure plugins, see the [[configuration#Plugins|Configuration]] page.
 ## Features
 - Automatically generates social media preview images for each page
 - Supports both light and dark mode themes
 - Customizable through frontmatter properties
 - Fallback to default image when needed
 - Full control over image design through custom components
 ## Configuration
 > [!info] Info
 >
 > The `baseUrl` property in your [[configuration]] must be set properly for social images to work correctly, as they require absolute paths.
 This plugin accepts the following configuration options:
 ```typescript title="quartz.config.ts"
 import { CustomOgImages } from "./quartz/plugins/emitters/ogImage"
 const config: QuartzConfig = {
  plugins: {
    emitters: [
      CustomOgImages({
        colorScheme: "lightMode", // what colors to use for generating image, same as theme colors from config, valid values are "darkMode" and "lightMode"
        width: 1200, // width to generate with (in pixels)
        height: 630, // height to generate with (in pixels)
        excludeRoot: false, // wether to exclude "/" index path to be excluded from auto generated images (false = use auto, true = use default og image)
        imageStructure: defaultImage, // custom image component to use
      }),
    ],
  },
 }
 ```
 ### Configuration Options
 | Option           | Type      | Default      | Description                                                       |
 | ---------------- | --------- | ------------ | ----------------------------------------------------------------- |
 | `colorScheme`    | string    | "lightMode"  | Theme to use for generating images ("darkMode" or "lightMode")    |
 | `width`          | number    | 1200         | Width of the generated image in pixels                            |
 | `height`         | number    | 630          | Height of the generated image in pixels                           |
 | `excludeRoot`    | boolean   | false        | Whether to exclude the root index page from auto-generated images |
 | `imageStructure` | component | defaultImage | Custom component to use for image generation                      |
 ## Frontmatter Properties
 The following properties can be used to customize your link previews:
 | Property            | Alias            | Summary                             |
 | ------------------- | ---------------- | ----------------------------------- |
 | `socialDescription` | `description`    | Description to be used for preview. |
 | `socialImage`       | `image`, `cover` | Link to preview image.              |
 The `socialImage` property should contain a link to an image relative to `quartz/static`. If you have a folder for all your images in `quartz/static/my-images`, an example for `socialImage` could be `"my-images/cover.png"`.
 > [!info] Info
 >
 > The priority for what image will be used for the cover image looks like the following: `frontmatter property > generated image (if enabled) > default image`.
 >
 > The default image (`quartz/static/og-image.png`) will only be used as a fallback if nothing else is set. If the Custom OG Images emitter plugin is enabled, it will be treated as the new default per page, but can be overwritten by setting the `socialImage` frontmatter property for that page.
 ## Customization
 You can fully customize how the images being generated look by passing your own component to `imageStructure`. This component takes JSX + some page metadata/config options and converts it to an image using [satori](https://github.com/vercel/satori). Vercel provides an [online playground](https://og-playground.vercel.app/) that can be used to preview how your JSX looks like as a picture. This is ideal for prototyping your custom design.
 ### Fonts
 You will also be passed an array containing a header and a body font (where the first entry is header and the second is body). The fonts matches the ones selected in `theme.typography.header` and `theme.typography.body` from `quartz.config.ts` and will be passed in the format required by [`satori`](https://github.com/vercel/satori). To use them in CSS, use the `.name` property (e.g. `fontFamily: fonts[1].name` to use the "body" font family).
 An example of a component using the header font could look like this:
 ```tsx title="socialImage.tsx"
 export const myImage: SocialImageOptions["imageStructure"] = (...) => {
  return <p style={{ fontFamily: fonts[0].name }}>Cool Header!</p>
 }
 ```
 > [!example]- Local fonts
 >
 > For cases where you use a local fonts under `static` folder, make sure to set the correct `@font-face` in `custom.scss`
 >
 > ```scss title="custom.scss"
 > @font-face {
 >   font-family: "Newsreader";
 >   font-style: normal;
 >   font-weight: normal;
 >   font-display: swap;
 >   src: url("/static/Newsreader.woff2") format("woff2");
 > }
 > ```
 >
 > Then in `quartz/util/og.tsx`, you can load the Satori fonts like so:
 >
 > ```tsx title="quartz/util/og.tsx"
 > import { joinSegments, QUARTZ } from "../path"
 > import fs from "fs"
 > import path from "path"
 >
 > const newsreaderFontPath = joinSegments(QUARTZ, "static", "Newsreader.woff2")
 > export async function getSatoriFonts(headerFont: FontSpecification, bodyFont: FontSpecification) {
 >   // ... rest of implementation remains same
 >   const fonts: SatoriOptions["fonts"] = [
 >     ...headerFontData.map((data, idx) => ({
 >       name: headerFontName,
 >       data,
 >       weight: headerWeights[idx],
 >       style: "normal" as const,
 >     })),
 >     ...bodyFontData.map((data, idx) => ({
 >       name: bodyFontName,
 >       data,
 >       weight: bodyWeights[idx],
 >       style: "normal" as const,
 >     })),
 >     {
 >       name: "Newsreader",
 >       data: await fs.promises.readFile(path.resolve(newsreaderFontPath)),
 >       weight: 400,
 >       style: "normal" as const,
 >     },
 >   ]
 >
 >   return fonts
 > }
 > ```
 >
 > This font then can be used with your custom structure.
 ## Examples
 Here are some example image components you can use as a starting point:
 ### Basic Example
 This example will generate images that look as follows:
 | Light                                      | Dark                                      |
 | ------------------------------------------ | ----------------------------------------- |
 | ![[custom-social-image-preview-light.png]] | ![[custom-social-image-preview-dark.png]] |
 ```tsx
 import { SatoriOptions } from "satori/wasm"
 import { GlobalConfiguration } from "../cfg"
 import { SocialImageOptions, UserOpts } from "./imageHelper"
 import { QuartzPluginData } from "../plugins/vfile"
 export const customImage: SocialImageOptions["imageStructure"] = (
  cfg: GlobalConfiguration,
  userOpts: UserOpts,
  title: string,
  description: string,
  fonts: SatoriOptions["fonts"],
  fileData: QuartzPluginData,
 ) => {
  // How many characters are allowed before switching to smaller font
  const fontBreakPoint = 22
  const useSmallerFont = title.length > fontBreakPoint
  const { colorScheme } = userOpts
  return (
    <div
      style={{
        display: "flex",
        flexDirection: "row",
        justifyContent: "flex-start",
        alignItems: "center",
        height: "100%",
        width: "100%",
      }}
    >
      <div
        style={{
          display: "flex",
          alignItems: "center",
          justifyContent: "center",
          height: "100%",
          width: "100%",
          backgroundColor: cfg.theme.colors[colorScheme].light,
          flexDirection: "column",
          gap: "2.5rem",
          paddingTop: "2rem",
          paddingBottom: "2rem",
        }}
      >
        <p
          style={{
            color: cfg.theme.colors[colorScheme].dark,
            fontSize: useSmallerFont ? 70 : 82,
            marginLeft: "4rem",
            textAlign: "center",
            marginRight: "4rem",
            fontFamily: fonts[0].name,
          }}
        >
          {title}
        </p>
        <p
          style={{
            color: cfg.theme.colors[colorScheme].dark,
            fontSize: 44,
            marginLeft: "8rem",
            marginRight: "8rem",
            lineClamp: 3,
            fontFamily: fonts[1].name,
          }}
        >
          {description}
        </p>
      </div>
      <div
        style={{
          height: "100%",
          width: "2vw",
          position: "absolute",
          backgroundColor: cfg.theme.colors[colorScheme].tertiary,
          opacity: 0.85,
        }}
      />
    </div>
  )
 }
 ```
 ### Advanced Example
 The following example includes a customized social image with a custom background and formatted date:
 ```typescript title="custom-og.tsx"
 export const og: SocialImageOptions["Component"] = (
  cfg: GlobalConfiguration,
  fileData: QuartzPluginData,
  { colorScheme }: Options,
  title: string,
  description: string,
  fonts: SatoriOptions["fonts"],
 ) => {
  let created: string | undefined
  let reading: string | undefined
  if (fileData.dates) {
    created = formatDate(getDate(cfg, fileData)!, cfg.locale)
  }
  const { minutes, text: _timeTaken, words: _words } = readingTime(fileData.text!)
  reading = i18n(cfg.locale).components.contentMeta.readingTime({
    minutes: Math.ceil(minutes),
  })
  const Li = [created, reading]
  return (
    <div
      style={{
        position: "relative",
        display: "flex",
        flexDirection: "row",
        alignItems: "flex-start",
        height: "100%",
        width: "100%",
        backgroundImage: `url("https://${cfg.baseUrl}/static/og-image.jpeg")`,
        backgroundSize: "100% 100%",
      }}
    >
      <div
        style={{
          position: "absolute",
          top: 0,
          left: 0,
          right: 0,
          bottom: 0,
          background: "radial-gradient(circle at center, transparent, rgba(0, 0, 0, 0.4) 70%)",
        }}
      />
      <div
        style={{
          display: "flex",
          height: "100%",
          width: "100%",
          flexDirection: "column",
          justifyContent: "flex-start",
          alignItems: "flex-start",
          gap: "1.5rem",
          paddingTop: "4rem",
          paddingBottom: "4rem",
          marginLeft: "4rem",
        }}
      >
        <img
          src={`"https://${cfg.baseUrl}/static/icon.jpeg"`}
          style={{
            position: "relative",
            backgroundClip: "border-box",
            borderRadius: "6rem",
          }}
          width={80}
        />
        <div
          style={{
            display: "flex",
            flexDirection: "column",
            textAlign: "left",
            fontFamily: fonts[0].name,
          }}
        >
          <h2
            style={{
              color: cfg.theme.colors[colorScheme].light,
              fontSize: "3rem",
              fontWeight: 700,
              marginRight: "4rem",
              fontFamily: fonts[0].name,
            }}
          >
            {title}
          </h2>
          <ul
            style={{
              color: cfg.theme.colors[colorScheme].gray,
              gap: "1rem",
              fontSize: "1.5rem",
              fontFamily: fonts[1].name,
            }}
          >
            {Li.map((item, index) => {
              if (item) {
                return <li key={index}>{item}</li>
              }
            })}
          </ul>
        </div>
        <p
          style={{
            color: cfg.theme.colors[colorScheme].light,
            fontSize: "1.5rem",
            overflow: "hidden",
            marginRight: "8rem",
            textOverflow: "ellipsis",
            display: "-webkit-box",
            WebkitLineClamp: 7,
            WebkitBoxOrient: "vertical",
            lineClamp: 7,
            fontFamily: fonts[1].name,
          }}
        >
          {description}
        </p>
      </div>
    </div>
  )
 }
 ```
--- a/package-lock.json
+++ b/package-lock.json
@@ -75,7 +75,6 @@
        "quartz": "quartz/bootstrap-cli.mjs"
      },
      "devDependencies": {
        "@types/cli-spinner": "^0.2.3",
        "@types/d3": "^7.4.3",
        "@types/hast": "^3.0.4",
        "@types/js-yaml": "^4.0.9",
@@ -1585,15 +1584,6 @@
      "integrity": "sha512-XKLA6syeBUaPzx4j3qwMqzzq+V4uo72BnlbOjmuljLrRqdsd3qnzvZZoxvMHZ23ndsRS4aufU6JOZYpCbU6T1A==",
      "license": "MIT"
    },
    "node_modules/@types/cli-spinner": {
      "version": "0.2.3",
      "resolved": "https://registry.npmjs.org/@types/cli-spinner/-/cli-spinner-0.2.3.tgz",
      "integrity": "sha512-TMO6mWltW0lCu1de8DMRq9+59OP/tEjghS+rs8ZEQ2EgYP5yV3bGw0tS14TMyJGqFaoVChNvhkVzv9RC1UgX+w==",
      "dev": true,
      "dependencies": {
        "@types/node": "*"
      }
    },
    "node_modules/@types/css-font-loading-module": {
      "version": "0.0.12",
      "resolved": "https://registry.npmjs.org/@types/css-font-loading-module/-/css-font-loading-module-0.0.12.tgz",
--- a/package.json
+++ b/package.json
@@ -98,7 +98,6 @@
    "yargs": "^17.7.2"
  },
  "devDependencies": {
    "@types/cli-spinner": "^0.2.3",
    "@types/d3": "^7.4.3",
    "@types/hast": "^3.0.4",
    "@types/js-yaml": "^4.0.9",
--- a/quartz.config.ts
+++ b/quartz.config.ts
@@ -19,7 +19,6 @@ const config: QuartzConfig = {
    baseUrl: "quartz.jzhao.xyz",
    ignorePatterns: ["private", "templates", ".obsidian"],
    defaultDateType: "created",
    generateSocialImages: true,
    theme: {
      fontOrigin: "googleFonts",
      cdnCaching: true,
@@ -88,6 +87,7 @@ const config: QuartzConfig = {
      Plugin.Assets(),
      Plugin.Static(),
      Plugin.NotFoundPage(),
      Plugin.CustomOgImages(),
    ],
  },
 }
--- a/quartz.layout.ts
+++ b/quartz.layout.ts
@@ -25,8 +25,15 @@ export const defaultContentPageLayout: PageLayout = {
  left: [
    Component.PageTitle(),
    Component.MobileOnly(Component.Spacer()),
-    Component.Search(),
+    Component.Flex({
-    Component.Darkmode(),
+      components: [
        {
          Component: Component.Search(),
          grow: true,
        },
        { Component: Component.Darkmode() },
      ],
    }),
    Component.Explorer(),
  ],
  right: [
--- a/quartz/build.ts
+++ b/quartz/build.ts
@@ -250,15 +250,25 @@ async function partialRebuildFromEntrypoint(
        ([_node, vfile]) => !toRemove.has(vfile.data.filePath!),
      )
-      const emittedFps = await emitter.emit(ctx, files, staticResources)
+      const emitted = await emitter.emit(ctx, files, staticResources)
-
+      if (Symbol.asyncIterator in emitted) {
-      if (ctx.argv.verbose) {
+        // Async generator case
-        for (const file of emittedFps) {
+        for await (const file of emitted) {
-          console.log(`[emit:${emitter.name}] ${file}`)
+          emittedFiles++
          if (ctx.argv.verbose) {
            console.log(`[emit:${emitter.name}] ${file}`)
          }
        }
      } else {
        // Array case
        emittedFiles += emitted.length
        if (ctx.argv.verbose) {
          for (const file of emitted) {
            console.log(`[emit:${emitter.name}] ${file}`)
          }
        }
      }
      emittedFiles += emittedFps.length
      continue
    }
@@ -280,15 +290,24 @@ async function partialRebuildFromEntrypoint(
        .filter((file) => !toRemove.has(file))
        .map((file) => contentMap.get(file)!)
-      const emittedFps = await emitter.emit(ctx, upstreamContent, staticResources)
+      const emitted = await emitter.emit(ctx, upstreamContent, staticResources)
-
+      if (Symbol.asyncIterator in emitted) {
-      if (ctx.argv.verbose) {
+        // Async generator case
-        for (const file of emittedFps) {
+        for await (const file of emitted) {
-          console.log(`[emit:${emitter.name}] ${file}`)
+          emittedFiles++
          if (ctx.argv.verbose) {
            console.log(`[emit:${emitter.name}] ${file}`)
          }
        }
      } else {
        // Array case
        emittedFiles += emitted.length
        if (ctx.argv.verbose) {
          for (const file of emitted) {
            console.log(`[emit:${emitter.name}] ${file}`)
          }
        }
      }
      emittedFiles += emittedFps.length
    }
  }
--- a/quartz/cfg.ts
+++ b/quartz/cfg.ts
@@ -61,10 +61,6 @@ export interface GlobalConfiguration {
   *   Quartz will avoid using this as much as possible and use relative URLs most of the time
   */
  baseUrl?: string
  /**
   * Whether to generate social images (Open Graph and Twitter standard) for link previews
   */
  generateSocialImages: boolean | Partial<SocialImageOptions>
  theme: Theme
  /**
   * Allow to translate the date in the language of your choice.
--- a/quartz/components/Breadcrumbs.tsx
+++ b/quartz/components/Breadcrumbs.tsx
@@ -102,7 +102,7 @@ export default ((opts?: Partial<BreadcrumbOptions>) => {
        // Add current slug to full path
        currentPath = joinSegments(currentPath, slugParts[i])
-        const includeTrailingSlash = !isTagPath || i < 1
+        const includeTrailingSlash = !isTagPath || i < slugParts.length - 1
        // Format and add current crumb
        const crumb = formatCrumb(
--- a/quartz/components/DesktopOnly.tsx
+++ b/quartz/components/DesktopOnly.tsx
@@ -1,18 +1,14 @@
 import { QuartzComponent, QuartzComponentConstructor, QuartzComponentProps } from "./types"
-export default ((component?: QuartzComponent) => {
+export default ((component: QuartzComponent) => {
-  if (component) {
+  const Component = component
-    const Component = component
+  const DesktopOnly: QuartzComponent = (props: QuartzComponentProps) => {
-    const DesktopOnly: QuartzComponent = (props: QuartzComponentProps) => {
+    return <Component displayClass="desktop-only" {...props} />
      return <Component displayClass="desktop-only" {...props} />
    }
    DesktopOnly.displayName = component.displayName
    DesktopOnly.afterDOMLoaded = component?.afterDOMLoaded
    DesktopOnly.beforeDOMLoaded = component?.beforeDOMLoaded
    DesktopOnly.css = component?.css
    return DesktopOnly
  } else {
    return () => <></>
  }
-}) satisfies QuartzComponentConstructor
+
  DesktopOnly.displayName = component.displayName
  DesktopOnly.afterDOMLoaded = component?.afterDOMLoaded
  DesktopOnly.beforeDOMLoaded = component?.beforeDOMLoaded
  DesktopOnly.css = component?.css
  return DesktopOnly
 }) satisfies QuartzComponentConstructor<QuartzComponent>
--- a/quartz/components/Flex.tsx
+++ b/quartz/components/Flex.tsx
@@ -0,0 +1,55 @@
 import { concatenateResources } from "../util/resources"
 import { QuartzComponent, QuartzComponentConstructor, QuartzComponentProps } from "./types"
 type FlexConfig = {
  components: {
    Component: QuartzComponent
    grow?: boolean
    shrink?: boolean
    basis?: string
    order?: number
    align?: "start" | "end" | "center" | "stretch"
    justify?: "start" | "end" | "center" | "between" | "around"
  }[]
  direction?: "row" | "row-reverse" | "column" | "column-reverse"
  wrap?: "nowrap" | "wrap" | "wrap-reverse"
  gap?: string
 }
 export default ((config: FlexConfig) => {
  const Flex: QuartzComponent = (props: QuartzComponentProps) => {
    const direction = config.direction ?? "row"
    const wrap = config.wrap ?? "nowrap"
    const gap = config.gap ?? "1rem"
    return (
      <div style={`display: flex; flex-direction: ${direction}; flex-wrap: ${wrap}; gap: ${gap};`}>
        {config.components.map((c) => {
          const grow = c.grow ? 1 : 0
          const shrink = (c.shrink ?? true) ? 1 : 0
          const basis = c.basis ?? "auto"
          const order = c.order ?? 0
          const align = c.align ?? "center"
          const justify = c.justify ?? "center"
          return (
            <div
              style={`flex-grow: ${grow}; flex-shrink: ${shrink}; flex-basis: ${basis}; order: ${order}; align-self: ${align}; justify-self: ${justify};`}
            >
              <c.Component {...props} />
            </div>
          )
        })}
      </div>
    )
  }
  Flex.afterDOMLoaded = concatenateResources(
    ...config.components.map((c) => c.Component.afterDOMLoaded),
  )
  Flex.beforeDOMLoaded = concatenateResources(
    ...config.components.map((c) => c.Component.beforeDOMLoaded),
  )
  Flex.css = concatenateResources(...config.components.map((c) => c.Component.css))
  return Flex
 }) satisfies QuartzComponentConstructor<FlexConfig>
--- a/quartz/components/Head.tsx
+++ b/quartz/components/Head.tsx
@@ -1,173 +1,41 @@
 import { i18n } from "../i18n"
-import { FullSlug, joinSegments, pathToRoot } from "../util/path"
+import { FullSlug, getFileExtension, joinSegments, pathToRoot } from "../util/path"
 import { CSSResourceToStyleElement, JSResourceToScriptElement } from "../util/resources"
-import { getFontSpecificationName, googleFontHref } from "../util/theme"
+import { googleFontHref } from "../util/theme"
 import { QuartzComponent, QuartzComponentConstructor, QuartzComponentProps } from "./types"
 import satori, { SatoriOptions } from "satori"
 import { loadEmoji, getIconCode } from "../util/emoji"
 import fs from "fs"
 import sharp from "sharp"
 import { ImageOptions, SocialImageOptions, getSatoriFont, defaultImage } from "../util/og"
 import { unescapeHTML } from "../util/escape"
-
+import { CustomOgImagesEmitterName } from "../plugins/emitters/ogImage"
 /**
 * Generates social image (OG/twitter standard) and saves it as `.webp` inside the public folder
 * @param opts options for generating image
 */
 async function generateSocialImage(
  { cfg, description, fileName, fontsPromise, title, fileData }: ImageOptions,
  userOpts: SocialImageOptions,
  imageDir: string,
 ) {
  const fonts = await fontsPromise
  const { width, height } = userOpts
  // JSX that will be used to generate satori svg
  const imageComponent = userOpts.imageStructure(cfg, userOpts, title, description, fonts, fileData)
  const svg = await satori(imageComponent, {
    width,
    height,
    fonts,
    loadAdditionalAsset: async (languageCode: string, segment: string) => {
      if (languageCode === "emoji") {
        return `data:image/svg+xml;base64,${btoa(await loadEmoji(getIconCode(segment)))}`
      }
      return languageCode
    },
  })
  // Convert svg directly to webp (with additional compression)
  const compressed = await sharp(Buffer.from(svg)).webp({ quality: 40 }).toBuffer()
  // Write to file system
  const filePath = joinSegments(imageDir, `${fileName}.${extension}`)
  fs.writeFileSync(filePath, compressed)
 }
 const extension = "webp"
 const defaultOptions: SocialImageOptions = {
  colorScheme: "lightMode",
  width: 1200,
  height: 630,
  imageStructure: defaultImage,
  excludeRoot: false,
 }
 export default (() => {
  let fontsPromise: Promise<SatoriOptions["fonts"]>
  let fullOptions: SocialImageOptions
  const Head: QuartzComponent = ({
    cfg,
    fileData,
    externalResources,
    ctx,
  }: QuartzComponentProps) => {
    // Initialize options if not set
    if (!fullOptions) {
      if (typeof cfg.generateSocialImages !== "boolean") {
        fullOptions = { ...defaultOptions, ...cfg.generateSocialImages }
      } else {
        fullOptions = defaultOptions
      }
    }
    // Memoize google fonts
    if (!fontsPromise && cfg.generateSocialImages) {
      const headerFont = getFontSpecificationName(cfg.theme.typography.header)
      const bodyFont = getFontSpecificationName(cfg.theme.typography.body)
      fontsPromise = getSatoriFont(headerFont, bodyFont)
    }
    const slug = fileData.filePath
    // since "/" is not a valid character in file names, replace with "-"
    const fileName = slug?.replaceAll("/", "-")
    // Get file description (priority: frontmatter > fileData > default)
    const fdDescription =
      fileData.description?.trim() ?? i18n(cfg.locale).propertyDefaults.description
    const titleSuffix = cfg.pageTitleSuffix ?? ""
    const title =
      (fileData.frontmatter?.title ?? i18n(cfg.locale).propertyDefaults.title) + titleSuffix
-    let description = ""
+    const description =
-    if (fdDescription) {
+      fileData.frontmatter?.socialDescription ??
-      description = unescapeHTML(fdDescription)
+      fileData.frontmatter?.description ??
-    }
+      unescapeHTML(fileData.description?.trim() ?? i18n(cfg.locale).propertyDefaults.description)
    if (fileData.frontmatter?.socialDescription) {
      description = fileData.frontmatter?.socialDescription as string
    } else if (fileData.frontmatter?.description) {
      description = fileData.frontmatter?.description
    }
    const fileDir = joinSegments(ctx.argv.output, "static", "social-images")
    if (cfg.generateSocialImages) {
      // Generate folders for social images (if they dont exist yet)
      if (!fs.existsSync(fileDir)) {
        fs.mkdirSync(fileDir, { recursive: true })
      }
      if (fileName) {
        // Generate social image (happens async)
        void generateSocialImage(
          {
            title,
            description,
            fileName,
            fileDir,
            fileExt: extension,
            fontsPromise,
            cfg,
            fileData,
          },
          fullOptions,
          fileDir,
        )
      }
    }
    const { css, js, additionalHead } = externalResources
    const url = new URL(`https://${cfg.baseUrl ?? "example.com"}`)
    const path = url.pathname as FullSlug
    const baseDir = fileData.slug === "404" ? path : pathToRoot(fileData.slug!)
    const iconPath = joinSegments(baseDir, "static/icon.png")
    const ogImageDefaultPath = `https://${cfg.baseUrl}/static/og-image.png`
    // "static/social-images/slug-filename.md.webp"
    const ogImageGeneratedPath = `https://${cfg.baseUrl}/${fileDir.replace(
      `${ctx.argv.output}/`,
      "",
    )}/${fileName}.${extension}`
    // Use default og image if filePath doesnt exist (for autogenerated paths with no .md file)
    const useDefaultOgImage = fileName === undefined || !cfg.generateSocialImages
    // Path to og/social image (priority: frontmatter > generated image (if enabled) > default image)
    let ogImagePath = useDefaultOgImage ? ogImageDefaultPath : ogImageGeneratedPath
    // TODO: could be improved to support external images in the future
    // Aliases for image and cover handled in `frontmatter.ts`
    const frontmatterImgUrl = fileData.frontmatter?.socialImage
    // Override with default og image if config option is set
    if (fileData.slug === "index") {
      ogImagePath = ogImageDefaultPath
    }
    // Override with frontmatter url if existing
    if (frontmatterImgUrl) {
      ogImagePath = `https://${cfg.baseUrl}/static/${frontmatterImgUrl}`
    }
    // Url of current page
    const socialUrl =
      fileData.slug === "404" ? url.toString() : joinSegments(url.toString(), fileData.slug!)
    const usesCustomOgImage = ctx.cfg.plugins.emitters.some(
      (e) => e.name === CustomOgImagesEmitterName,
    )
    const ogImageDefaultPath = `https://${cfg.baseUrl}/static/og-image.png`
    return (
      <head>
        <title>{title}</title>
@@ -181,7 +49,7 @@ export default (() => {
        )}
        <link rel="preconnect" href="https://cdnjs.cloudflare.com" crossOrigin="anonymous" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-        {/* OG/Twitter meta tags */}
+
        <meta name="og:site_name" content={cfg.pageTitle}></meta>
        <meta property="og:title" content={title} />
        <meta property="og:type" content="website" />
@@ -189,28 +57,32 @@ export default (() => {
        <meta name="twitter:title" content={title} />
        <meta name="twitter:description" content={description} />
        <meta property="og:description" content={description} />
        <meta property="og:image:type" content={`image/${extension}`} />
        <meta property="og:image:alt" content={description} />
-        {/* Dont set width and height if unknown (when using custom frontmatter image) */}
+
-        {!frontmatterImgUrl && (
+        {!usesCustomOgImage && (
          <>
-            <meta property="og:image:width" content={fullOptions.width.toString()} />
+            <meta property="og:image" content={ogImageDefaultPath} />
-            <meta property="og:image:height" content={fullOptions.height.toString()} />
+            <meta property="og:image:url" content={ogImageDefaultPath} />
            <meta name="twitter:image" content={ogImageDefaultPath} />
            <meta
              property="og:image:type"
              content={`image/${getFileExtension(ogImageDefaultPath) ?? "png"}`}
            />
          </>
        )}
-        <meta property="og:image:url" content={ogImagePath} />
+
        {cfg.baseUrl && (
          <>
            <meta name="twitter:image" content={ogImagePath} />
            <meta property="og:image" content={ogImagePath} />
            <meta property="twitter:domain" content={cfg.baseUrl}></meta>
            <meta property="og:url" content={socialUrl}></meta>
            <meta property="twitter:url" content={socialUrl}></meta>
          </>
        )}
        <link rel="icon" href={iconPath} />
        <meta name="description" content={description} />
        <meta name="generator" content="Quartz" />
        {css.map((resource) => CSSResourceToStyleElement(resource, true))}
        {js
          .filter((resource) => resource.loadTime === "beforeDOMReady")
--- a/quartz/components/MobileOnly.tsx
+++ b/quartz/components/MobileOnly.tsx
@@ -1,18 +1,14 @@
 import { QuartzComponent, QuartzComponentConstructor, QuartzComponentProps } from "./types"
-export default ((component?: QuartzComponent) => {
+export default ((component: QuartzComponent) => {
-  if (component) {
+  const Component = component
-    const Component = component
+  const MobileOnly: QuartzComponent = (props: QuartzComponentProps) => {
-    const MobileOnly: QuartzComponent = (props: QuartzComponentProps) => {
+    return <Component displayClass="mobile-only" {...props} />
      return <Component displayClass="mobile-only" {...props} />
    }
    MobileOnly.displayName = component.displayName
    MobileOnly.afterDOMLoaded = component?.afterDOMLoaded
    MobileOnly.beforeDOMLoaded = component?.beforeDOMLoaded
    MobileOnly.css = component?.css
    return MobileOnly
  } else {
    return () => <></>
  }
-}) satisfies QuartzComponentConstructor
+
  MobileOnly.displayName = component.displayName
  MobileOnly.afterDOMLoaded = component?.afterDOMLoaded
  MobileOnly.beforeDOMLoaded = component?.beforeDOMLoaded
  MobileOnly.css = component?.css
  return MobileOnly
 }) satisfies QuartzComponentConstructor<QuartzComponent>
--- a/quartz/components/index.ts
+++ b/quartz/components/index.ts
@@ -20,6 +20,7 @@ import MobileOnly from "./MobileOnly"
 import RecentNotes from "./RecentNotes"
 import Breadcrumbs from "./Breadcrumbs"
 import Comments from "./Comments"
 import Flex from "./Flex"
 export {
  ArticleTitle,
@@ -44,4 +45,5 @@ export {
  NotFound,
  Breadcrumbs,
  Comments,
  Flex,
 }
--- a/quartz/components/scripts/mermaid.inline.ts
+++ b/quartz/components/scripts/mermaid.inline.ts
@@ -12,7 +12,8 @@ class DiagramPanZoom {
  private scale = 1
  private readonly MIN_SCALE = 0.5
  private readonly MAX_SCALE = 3
-  private readonly ZOOM_SENSITIVITY = 0.001
+
  cleanups: (() => void)[] = []
  constructor(
    private container: HTMLElement,
@@ -20,19 +21,33 @@ class DiagramPanZoom {
  ) {
    this.setupEventListeners()
    this.setupNavigationControls()
    this.resetTransform()
  }
  private setupEventListeners() {
    // Mouse drag events
-    this.container.addEventListener("mousedown", this.onMouseDown.bind(this))
+    const mouseDownHandler = this.onMouseDown.bind(this)
-    document.addEventListener("mousemove", this.onMouseMove.bind(this))
+    const mouseMoveHandler = this.onMouseMove.bind(this)
-    document.addEventListener("mouseup", this.onMouseUp.bind(this))
+    const mouseUpHandler = this.onMouseUp.bind(this)
    const resizeHandler = this.resetTransform.bind(this)
-    // Wheel zoom events
+    this.container.addEventListener("mousedown", mouseDownHandler)
-    this.container.addEventListener("wheel", this.onWheel.bind(this), { passive: false })
+    document.addEventListener("mousemove", mouseMoveHandler)
    document.addEventListener("mouseup", mouseUpHandler)
    window.addEventListener("resize", resizeHandler)
-    // Reset on window resize
+    this.cleanups.push(
-    window.addEventListener("resize", this.resetTransform.bind(this))
+      () => this.container.removeEventListener("mousedown", mouseDownHandler),
      () => document.removeEventListener("mousemove", mouseMoveHandler),
      () => document.removeEventListener("mouseup", mouseUpHandler),
      () => window.removeEventListener("resize", resizeHandler),
    )
  }
  cleanup() {
    for (const cleanup of this.cleanups) {
      cleanup()
    }
  }
  private setupNavigationControls() {
@@ -84,26 +99,6 @@ class DiagramPanZoom {
    this.container.style.cursor = "grab"
  }
  private onWheel(e: WheelEvent) {
    e.preventDefault()
    const delta = -e.deltaY * this.ZOOM_SENSITIVITY
    const newScale = Math.min(Math.max(this.scale + delta, this.MIN_SCALE), this.MAX_SCALE)
    // Calculate mouse position relative to content
    const rect = this.content.getBoundingClientRect()
    const mouseX = e.clientX - rect.left
    const mouseY = e.clientY - rect.top
    // Adjust pan to zoom around mouse position
    const scaleDiff = newScale - this.scale
    this.currentPan.x -= mouseX * scaleDiff
    this.currentPan.y -= mouseY * scaleDiff
    this.scale = newScale
    this.updateTransform()
  }
  private zoom(delta: number) {
    const newScale = Math.min(Math.max(this.scale + delta, this.MIN_SCALE), this.MAX_SCALE)
@@ -126,7 +121,11 @@ class DiagramPanZoom {
  private resetTransform() {
    this.scale = 1
-    this.currentPan = { x: 0, y: 0 }
+    const svg = this.content.querySelector("svg")!
    this.currentPan = {
      x: svg.getBoundingClientRect().width / 2,
      y: svg.getBoundingClientRect().height / 2,
    }
    this.updateTransform()
  }
 }
@@ -149,38 +148,59 @@ document.addEventListener("nav", async () => {
  const nodes = center.querySelectorAll("code.mermaid") as NodeListOf<HTMLElement>
  if (nodes.length === 0) return
  const computedStyleMap = cssVars.reduce(
    (acc, key) => {
      acc[key] = getComputedStyle(document.documentElement).getPropertyValue(key)
      return acc
    },
    {} as Record<(typeof cssVars)[number], string>,
  )
  mermaidImport ||= await import(
    // @ts-ignore
    "https://cdnjs.cloudflare.com/ajax/libs/mermaid/11.4.0/mermaid.esm.min.mjs"
  )
  const mermaid = mermaidImport.default
-  const darkMode = document.documentElement.getAttribute("saved-theme") === "dark"
+  const textMapping: WeakMap<HTMLElement, string> = new WeakMap()
-  mermaid.initialize({
+  for (const node of nodes) {
-    startOnLoad: false,
+    textMapping.set(node, node.innerText)
-    securityLevel: "loose",
+  }
-    theme: darkMode ? "dark" : "base",
+
-    themeVariables: {
+  async function renderMermaid() {
-      fontFamily: computedStyleMap["--codeFont"],
+    // de-init any other diagrams
-      primaryColor: computedStyleMap["--light"],
+    for (const node of nodes) {
-      primaryTextColor: computedStyleMap["--darkgray"],
+      node.removeAttribute("data-processed")
-      primaryBorderColor: computedStyleMap["--tertiary"],
+      const oldText = textMapping.get(node)
-      lineColor: computedStyleMap["--darkgray"],
+      if (oldText) {
-      secondaryColor: computedStyleMap["--secondary"],
+        node.innerHTML = oldText
-      tertiaryColor: computedStyleMap["--tertiary"],
+      }
-      clusterBkg: computedStyleMap["--light"],
+    }
-      edgeLabelBackground: computedStyleMap["--highlight"],
+
-    },
+    const computedStyleMap = cssVars.reduce(
-  })
+      (acc, key) => {
-  await mermaid.run({ nodes })
+        acc[key] = window.getComputedStyle(document.documentElement).getPropertyValue(key)
        return acc
      },
      {} as Record<(typeof cssVars)[number], string>,
    )
    const darkMode = document.documentElement.getAttribute("saved-theme") === "dark"
    mermaid.initialize({
      startOnLoad: false,
      securityLevel: "loose",
      theme: darkMode ? "dark" : "base",
      themeVariables: {
        fontFamily: computedStyleMap["--codeFont"],
        primaryColor: computedStyleMap["--light"],
        primaryTextColor: computedStyleMap["--darkgray"],
        primaryBorderColor: computedStyleMap["--tertiary"],
        lineColor: computedStyleMap["--darkgray"],
        secondaryColor: computedStyleMap["--secondary"],
        tertiaryColor: computedStyleMap["--tertiary"],
        clusterBkg: computedStyleMap["--light"],
        edgeLabelBackground: computedStyleMap["--highlight"],
      },
    })
    await mermaid.run({ nodes })
  }
  await renderMermaid()
  document.addEventListener("themechange", renderMermaid)
  window.addCleanup(() => document.removeEventListener("themechange", renderMermaid))
  for (let i = 0; i < nodes.length; i++) {
    const codeBlock = nodes[i] as HTMLElement
@@ -203,7 +223,6 @@ document.addEventListener("nav", async () => {
    if (!popupContainer) return
    let panZoom: DiagramPanZoom | null = null
    function showMermaid() {
      const container = popupContainer.querySelector("#mermaid-space") as HTMLElement
      const content = popupContainer.querySelector(".mermaid-content") as HTMLElement
@@ -224,24 +243,15 @@ document.addEventListener("nav", async () => {
    function hideMermaid() {
      popupContainer.classList.remove("active")
      panZoom?.cleanup()
      panZoom = null
    }
    function handleEscape(e: any) {
      if (e.key === "Escape") {
        hideMermaid()
      }
    }
    const closeBtn = popupContainer.querySelector(".close-button") as HTMLButtonElement
    closeBtn.addEventListener("click", hideMermaid)
    expandBtn.addEventListener("click", showMermaid)
    registerEscapeHandler(popupContainer, hideMermaid)
    document.addEventListener("keydown", handleEscape)
    window.addCleanup(() => {
-      closeBtn.removeEventListener("click", hideMermaid)
+      panZoom?.cleanup()
      expandBtn.removeEventListener("click", showMermaid)
    })
  }
--- a/quartz/components/styles/mermaid.inline.scss
+++ b/quartz/components/styles/mermaid.inline.scss
@@ -53,46 +53,16 @@ pre {
  }
  & > #mermaid-space {
-    display: grid;
+    border: 1px solid var(--lightgray);
-    width: 90%;
+    background-color: var(--light);
-    height: 90vh;
+    border-radius: 5px;
-    margin: 5vh auto;
+    position: fixed;
-    background: var(--light);
+    top: 50%;
-    box-shadow:
+    left: 50%;
-      0 14px 50px rgba(27, 33, 48, 0.12),
+    transform: translate(-50%, -50%);
-      0 10px 30px rgba(27, 33, 48, 0.16);
+    height: 80vh;
    width: 80vw;
    overflow: hidden;
    position: relative;
    & > .mermaid-header {
      display: flex;
      justify-content: flex-end;
      padding: 1rem;
      border-bottom: 1px solid var(--lightgray);
      background: var(--light);
      z-index: 2;
      max-height: fit-content;
      & > .close-button {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 32px;
        height: 32px;
        padding: 0;
        background: transparent;
        border: none;
        border-radius: 4px;
        color: var(--darkgray);
        cursor: pointer;
        transition: all 0.2s ease;
        &:hover {
          background: var(--lightgray);
          color: var(--dark);
        }
      }
    }
    & > .mermaid-content {
      padding: 2rem;
--- a/quartz/plugins/emitters/404.tsx
+++ b/quartz/plugins/emitters/404.tsx
@@ -31,7 +31,7 @@ export const NotFoundPage: QuartzEmitterPlugin = () => {
    async getDependencyGraph(_ctx, _content, _resources) {
      return new DepGraph<FilePath>()
    },
-    async emit(ctx, _content, resources): Promise<FilePath[]> {
+    async *emit(ctx, _content, resources) {
      const cfg = ctx.cfg.configuration
      const slug = "404" as FullSlug
@@ -55,14 +55,12 @@ export const NotFoundPage: QuartzEmitterPlugin = () => {
        allFiles: [],
      }
-      return [
+      yield write({
-        await write({
+        ctx,
-          ctx,
+        content: renderPage(cfg, slug, componentData, opts, externalResources),
-          content: renderPage(cfg, slug, componentData, opts, externalResources),
+        slug,
-          slug,
+        ext: ".html",
-          ext: ".html",
+      })
        }),
      ]
    },
  }
 }
--- a/quartz/plugins/emitters/aliases.ts
+++ b/quartz/plugins/emitters/aliases.ts
@@ -18,15 +18,13 @@ export const AliasRedirects: QuartzEmitterPlugin = () => ({
    return graph
  },
-  async emit(ctx, content, _resources): Promise<FilePath[]> {
+  async *emit(ctx, content, _resources) {
    const fps: FilePath[] = []
    for (const [_tree, file] of content) {
      const ogSlug = simplifySlug(file.data.slug!)
      for (const slug of file.data.aliases ?? []) {
        const redirUrl = resolveRelative(slug, file.data.slug!)
-        const fp = await write({
+        yield write({
          ctx,
          content: `
            <!DOCTYPE html>
@@ -43,10 +41,7 @@ export const AliasRedirects: QuartzEmitterPlugin = () => ({
          slug,
          ext: ".html",
        })
        fps.push(fp)
      }
    }
    return fps
  },
 })
--- a/quartz/plugins/emitters/assets.ts
+++ b/quartz/plugins/emitters/assets.ts
@@ -33,10 +33,9 @@ export const Assets: QuartzEmitterPlugin = () => {
      return graph
    },
-    async emit({ argv, cfg }, _content, _resources): Promise<FilePath[]> {
+    async *emit({ argv, cfg }, _content, _resources) {
      const assetsPath = argv.output
      const fps = await filesToCopy(argv, cfg)
      const res: FilePath[] = []
      for (const fp of fps) {
        const ext = path.extname(fp)
        const src = joinSegments(argv.directory, fp) as FilePath
@@ -46,10 +45,8 @@ export const Assets: QuartzEmitterPlugin = () => {
        const dir = path.dirname(dest) as FilePath
        await fs.promises.mkdir(dir, { recursive: true }) // ensure dir exists
        await fs.promises.copyFile(src, dest)
-        res.push(dest)
+        yield dest
      }
      return res
    },
  }
 }
--- a/quartz/plugins/emitters/cname.ts
+++ b/quartz/plugins/emitters/cname.ts
@@ -14,7 +14,7 @@ export const CNAME: QuartzEmitterPlugin = () => ({
  async getDependencyGraph(_ctx, _content, _resources) {
    return new DepGraph<FilePath>()
  },
-  async emit({ argv, cfg }, _content, _resources): Promise<FilePath[]> {
+  async emit({ argv, cfg }, _content, _resources) {
    if (!cfg.configuration.baseUrl) {
      console.warn(chalk.yellow("CNAME emitter requires `baseUrl` to be set in your configuration"))
      return []
@@ -24,7 +24,7 @@ export const CNAME: QuartzEmitterPlugin = () => ({
    if (!content) {
      return []
    }
-    fs.writeFileSync(path, content)
+    await fs.promises.writeFile(path, content)
    return [path] as FilePath[]
  },
 })
--- a/quartz/plugins/emitters/componentResources.ts
+++ b/quartz/plugins/emitters/componentResources.ts
@@ -9,7 +9,7 @@ import styles from "../../styles/custom.scss"
 import popoverStyle from "../../components/styles/popover.scss"
 import { BuildCtx } from "../../util/ctx"
 import { QuartzComponent } from "../../components/types"
-import { googleFontHref, joinStyles } from "../../util/theme"
+import { googleFontHref, joinStyles, processGoogleFonts } from "../../util/theme"
 import { Features, transform } from "lightningcss"
 import { transform as transpile } from "esbuild"
 import { write } from "./helpers"
@@ -207,8 +207,7 @@ export const ComponentResources: QuartzEmitterPlugin = () => {
    async getDependencyGraph(_ctx, _content, _resources) {
      return new DepGraph<FilePath>()
    },
-    async emit(ctx, _content, _resources): Promise<FilePath[]> {
+    async *emit(ctx, _content, _resources) {
      const promises: Promise<FilePath>[] = []
      const cfg = ctx.cfg.configuration
      // component specific scripts and styles
      const componentResources = getComponentResources(ctx)
@@ -217,42 +216,35 @@ export const ComponentResources: QuartzEmitterPlugin = () => {
        // let the user do it themselves in css
      } else if (cfg.theme.fontOrigin === "googleFonts" && !cfg.theme.cdnCaching) {
        // when cdnCaching is true, we link to google fonts in Head.tsx
-        let match
+        const response = await fetch(googleFontHref(ctx.cfg.configuration.theme))
        googleFontsStyleSheet = await response.text()
-        const fontSourceRegex = /url\((https:\/\/fonts.gstatic.com\/s\/[^)]+\.(woff2|ttf))\)/g
+        if (!cfg.baseUrl) {
-
+          throw new Error(
-        googleFontsStyleSheet = await (
+            "baseUrl must be defined when using Google Fonts without cfg.theme.cdnCaching",
          await fetch(googleFontHref(ctx.cfg.configuration.theme))
        ).text()
        while ((match = fontSourceRegex.exec(googleFontsStyleSheet)) !== null) {
          // match[0] is the `url(path)`, match[1] is the `path`
          const url = match[1]
          // the static name of this file.
          const [filename, ext] = url.split("/").pop()!.split(".")
          googleFontsStyleSheet = googleFontsStyleSheet.replace(
            url,
            `https://${cfg.baseUrl}/static/fonts/${filename}.ttf`,
          )
        }
-          promises.push(
+        const { processedStylesheet, fontFiles } = await processGoogleFonts(
-            fetch(url)
+          googleFontsStyleSheet,
-              .then((res) => {
+          cfg.baseUrl,
-                if (!res.ok) {
+        )
-                  throw new Error(`Failed to fetch font`)
+        googleFontsStyleSheet = processedStylesheet
-                }
+
-                return res.arrayBuffer()
+        // Download and save font files
-              })
+        for (const fontFile of fontFiles) {
-              .then((buf) =>
+          const res = await fetch(fontFile.url)
-                write({
+          if (!res.ok) {
-                  ctx,
+            throw new Error(`failed to fetch font ${fontFile.filename}`)
-                  slug: joinSegments("static", "fonts", filename) as FullSlug,
+          }
-                  ext: `.${ext}`,
+
-                  content: Buffer.from(buf),
+          const buf = await res.arrayBuffer()
-                }),
+          yield write({
-              ),
+            ctx,
-          )
+            slug: joinSegments("static", "fonts", fontFile.filename) as FullSlug,
            ext: `.${fontFile.extension}`,
            content: Buffer.from(buf),
          })
        }
      }
@@ -267,45 +259,42 @@ export const ComponentResources: QuartzEmitterPlugin = () => {
        ...componentResources.css,
        styles,
      )
      const [prescript, postscript] = await Promise.all([
        joinScripts(componentResources.beforeDOMLoaded),
        joinScripts(componentResources.afterDOMLoaded),
      ])
-      promises.push(
+      yield write({
-        write({
+        ctx,
-          ctx,
+        slug: "index" as FullSlug,
-          slug: "index" as FullSlug,
+        ext: ".css",
-          ext: ".css",
+        content: transform({
-          content: transform({
+          filename: "index.css",
-            filename: "index.css",
+          code: Buffer.from(stylesheet),
-            code: Buffer.from(stylesheet),
+          minify: true,
-            minify: true,
+          targets: {
-            targets: {
+            safari: (15 << 16) | (6 << 8), // 15.6
-              safari: (15 << 16) | (6 << 8), // 15.6
+            ios_saf: (15 << 16) | (6 << 8), // 15.6
-              ios_saf: (15 << 16) | (6 << 8), // 15.6
+            edge: 115 << 16,
-              edge: 115 << 16,
+            firefox: 102 << 16,
-              firefox: 102 << 16,
+            chrome: 109 << 16,
-              chrome: 109 << 16,
+          },
-            },
+          include: Features.MediaQueries,
-            include: Features.MediaQueries,
+        }).code.toString(),
-          }).code.toString(),
+      }),
-        }),
+        yield write({
        write({
          ctx,
          slug: "prescript" as FullSlug,
          ext: ".js",
          content: prescript,
        }),
-        write({
+        yield write({
          ctx,
          slug: "postscript" as FullSlug,
          ext: ".js",
          content: postscript,
-        }),
+        })
      )
      return await Promise.all(promises)
    },
  }
 }
--- a/quartz/plugins/emitters/contentIndex.tsx
+++ b/quartz/plugins/emitters/contentIndex.tsx
@@ -116,9 +116,8 @@ export const ContentIndex: QuartzEmitterPlugin<Partial<Options>> = (opts) => {
      return graph
    },
-    async emit(ctx, content, _resources) {
+    async *emit(ctx, content, _resources) {
      const cfg = ctx.cfg.configuration
      const emitted: FilePath[] = []
      const linkIndex: ContentIndexMap = new Map()
      for (const [tree, file] of content) {
        const slug = file.data.slug!
@@ -140,25 +139,21 @@ export const ContentIndex: QuartzEmitterPlugin<Partial<Options>> = (opts) => {
      }
      if (opts?.enableSiteMap) {
-        emitted.push(
+        yield write({
-          await write({
+          ctx,
-            ctx,
+          content: generateSiteMap(cfg, linkIndex),
-            content: generateSiteMap(cfg, linkIndex),
+          slug: "sitemap" as FullSlug,
-            slug: "sitemap" as FullSlug,
+          ext: ".xml",
-            ext: ".xml",
+        })
          }),
        )
      }
      if (opts?.enableRSS) {
-        emitted.push(
+        yield write({
-          await write({
+          ctx,
-            ctx,
+          content: generateRSSFeed(cfg, linkIndex, opts.rssLimit),
-            content: generateRSSFeed(cfg, linkIndex, opts.rssLimit),
+          slug: (opts?.rssSlug ?? "index") as FullSlug,
-            slug: (opts?.rssSlug ?? "index") as FullSlug,
+          ext: ".xml",
-            ext: ".xml",
+        })
          }),
        )
      }
      const fp = joinSegments("static", "contentIndex") as FullSlug
@@ -173,16 +168,12 @@ export const ContentIndex: QuartzEmitterPlugin<Partial<Options>> = (opts) => {
        }),
      )
-      emitted.push(
+      yield write({
-        await write({
+        ctx,
-          ctx,
+        content: JSON.stringify(simplifiedIndex),
-          content: JSON.stringify(simplifiedIndex),
+        slug: fp,
-          slug: fp,
+        ext: ".json",
-          ext: ".json",
+      })
        }),
      )
      return emitted
    },
    externalResources: (ctx) => {
      if (opts?.enableRSS) {
--- a/quartz/plugins/emitters/contentPage.tsx
+++ b/quartz/plugins/emitters/contentPage.tsx
@@ -94,9 +94,8 @@ export const ContentPage: QuartzEmitterPlugin<Partial<FullPageLayout>> = (userOp
      return graph
    },
-    async emit(ctx, content, resources): Promise<FilePath[]> {
+    async *emit(ctx, content, resources) {
      const cfg = ctx.cfg.configuration
      const fps: FilePath[] = []
      const allFiles = content.map((c) => c[1].data)
      let containsIndex = false
@@ -118,14 +117,12 @@ export const ContentPage: QuartzEmitterPlugin<Partial<FullPageLayout>> = (userOp
        }
        const content = renderPage(cfg, slug, componentData, opts, externalResources)
-        const fp = await write({
+        yield write({
          ctx,
          content,
          slug,
          ext: ".html",
        })
        fps.push(fp)
      }
      if (!containsIndex && !ctx.argv.fastRebuild) {
@@ -135,8 +132,6 @@ export const ContentPage: QuartzEmitterPlugin<Partial<FullPageLayout>> = (userOp
          ),
        )
      }
      return fps
    },
  }
 }
--- a/quartz/plugins/emitters/folderPage.tsx
+++ b/quartz/plugins/emitters/folderPage.tsx
@@ -69,8 +69,7 @@ export const FolderPage: QuartzEmitterPlugin<Partial<FolderPageOptions>> = (user
      return graph
    },
-    async emit(ctx, content, resources): Promise<FilePath[]> {
+    async *emit(ctx, content, resources) {
      const fps: FilePath[] = []
      const allFiles = content.map((c) => c[1].data)
      const cfg = ctx.cfg.configuration
@@ -119,16 +118,13 @@ export const FolderPage: QuartzEmitterPlugin<Partial<FolderPageOptions>> = (user
        }
        const content = renderPage(cfg, slug, componentData, opts, externalResources)
-        const fp = await write({
+        yield write({
          ctx,
          content,
          slug,
          ext: ".html",
        })
        fps.push(fp)
      }
      return fps
    },
  }
 }
--- a/quartz/plugins/emitters/helpers.ts
+++ b/quartz/plugins/emitters/helpers.ts
@@ -2,12 +2,13 @@ import path from "path"
 import fs from "fs"
 import { BuildCtx } from "../../util/ctx"
 import { FilePath, FullSlug, joinSegments } from "../../util/path"
 import { Readable } from "stream"
 type WriteOptions = {
  ctx: BuildCtx
  slug: FullSlug
  ext: `.${string}` | ""
-  content: string | Buffer
+  content: string | Buffer | Readable
 }
 export const write = async ({ ctx, slug, ext, content }: WriteOptions): Promise<FilePath> => {
--- a/quartz/plugins/emitters/index.ts
+++ b/quartz/plugins/emitters/index.ts
@@ -8,3 +8,4 @@ export { Static } from "./static"
 export { ComponentResources } from "./componentResources"
 export { NotFoundPage } from "./404"
 export { CNAME } from "./cname"
 export { CustomOgImages } from "./ogImage"
--- a/quartz/plugins/emitters/ogImage.tsx
+++ b/quartz/plugins/emitters/ogImage.tsx
@@ -0,0 +1,134 @@
 import { QuartzEmitterPlugin } from "../types"
 import { i18n } from "../../i18n"
 import { unescapeHTML } from "../../util/escape"
 import { FullSlug, getFileExtension } from "../../util/path"
 import { ImageOptions, SocialImageOptions, defaultImage, getSatoriFonts } from "../../util/og"
 import sharp from "sharp"
 import satori from "satori"
 import { loadEmoji, getIconCode } from "../../util/emoji"
 import { Readable } from "stream"
 import { write } from "./helpers"
 const defaultOptions: SocialImageOptions = {
  colorScheme: "lightMode",
  width: 1200,
  height: 630,
  imageStructure: defaultImage,
  excludeRoot: false,
 }
 /**
 * Generates social image (OG/twitter standard) and saves it as `.webp` inside the public folder
 * @param opts options for generating image
 */
 async function generateSocialImage(
  { cfg, description, fonts, title, fileData }: ImageOptions,
  userOpts: SocialImageOptions,
 ): Promise<Readable> {
  const { width, height } = userOpts
  const imageComponent = userOpts.imageStructure(cfg, userOpts, title, description, fonts, fileData)
  const svg = await satori(imageComponent, {
    width,
    height,
    fonts,
    loadAdditionalAsset: async (languageCode: string, segment: string) => {
      if (languageCode === "emoji") {
        return `data:image/svg+xml;base64,${btoa(await loadEmoji(getIconCode(segment)))}`
      }
      return languageCode
    },
  })
  return sharp(Buffer.from(svg)).webp({ quality: 40 })
 }
 export const CustomOgImagesEmitterName = "CustomOgImages"
 export const CustomOgImages: QuartzEmitterPlugin<Partial<SocialImageOptions>> = (userOpts) => {
  const fullOptions = { ...defaultOptions, ...userOpts }
  return {
    name: CustomOgImagesEmitterName,
    getQuartzComponents() {
      return []
    },
    async *emit(ctx, content, _resources) {
      const cfg = ctx.cfg.configuration
      const headerFont = cfg.theme.typography.header
      const bodyFont = cfg.theme.typography.body
      const fonts = await getSatoriFonts(headerFont, bodyFont)
      for (const [_tree, vfile] of content) {
        // if this file defines socialImage, we can skip
        if (vfile.data.frontmatter?.socialImage !== undefined) {
          continue
        }
        const slug = vfile.data.slug!
        const titleSuffix = cfg.pageTitleSuffix ?? ""
        const title =
          (vfile.data.frontmatter?.title ?? i18n(cfg.locale).propertyDefaults.title) + titleSuffix
        const description =
          vfile.data.frontmatter?.socialDescription ??
          vfile.data.frontmatter?.description ??
          unescapeHTML(
            vfile.data.description?.trim() ?? i18n(cfg.locale).propertyDefaults.description,
          )
        const stream = await generateSocialImage(
          {
            title,
            description,
            fonts,
            cfg,
            fileData: vfile.data,
          },
          fullOptions,
        )
        yield write({
          ctx,
          content: stream,
          slug: `${slug}-og-image` as FullSlug,
          ext: ".webp",
        })
      }
    },
    externalResources: (ctx) => {
      if (!ctx.cfg.configuration.baseUrl) {
        return {}
      }
      const baseUrl = ctx.cfg.configuration.baseUrl
      return {
        additionalHead: [
          (pageData) => {
            const isRealFile = pageData.filePath !== undefined
            const userDefinedOgImagePath = pageData.frontmatter?.socialImage
            const generatedOgImagePath = isRealFile
              ? `https://${baseUrl}/${pageData.slug!}-og-image.webp`
              : undefined
            const defaultOgImagePath = `https://${baseUrl}/static/og-image.png`
            const ogImagePath = userDefinedOgImagePath ?? generatedOgImagePath ?? defaultOgImagePath
            const ogImageMimeType = `image/${getFileExtension(ogImagePath) ?? "png"}`
            return (
              <>
                {!userDefinedOgImagePath && (
                  <>
                    <meta property="og:image:width" content={fullOptions.width.toString()} />
                    <meta property="og:image:height" content={fullOptions.height.toString()} />
                  </>
                )}
                <meta property="og:image" content={ogImagePath} />
                <meta property="og:image:url" content={ogImagePath} />
                <meta name="twitter:image" content={ogImagePath} />
                <meta property="og:image:type" content={ogImageMimeType} />
              </>
            )
          },
        ],
      }
    },
  }
 }
--- a/quartz/plugins/emitters/static.ts
+++ b/quartz/plugins/emitters/static.ts
@@ -3,6 +3,7 @@ import { QuartzEmitterPlugin } from "../types"
 import fs from "fs"
 import { glob } from "../../util/glob"
 import DepGraph from "../../depgraph"
 import { dirname } from "path"
 export const Static: QuartzEmitterPlugin = () => ({
  name: "Static",
@@ -20,13 +21,17 @@ export const Static: QuartzEmitterPlugin = () => ({
    return graph
  },
-  async emit({ argv, cfg }, _content, _resources): Promise<FilePath[]> {
+  async *emit({ argv, cfg }, _content) {
    const staticPath = joinSegments(QUARTZ, "static")
    const fps = await glob("**", staticPath, cfg.configuration.ignorePatterns)
-    await fs.promises.cp(staticPath, joinSegments(argv.output, "static"), {
+    const outputStaticPath = joinSegments(argv.output, "static")
-      recursive: true,
+    await fs.promises.mkdir(outputStaticPath, { recursive: true })
-      dereference: true,
+    for (const fp of fps) {
-    })
+      const src = joinSegments(staticPath, fp) as FilePath
-    return fps.map((fp) => joinSegments(argv.output, "static", fp)) as FilePath[]
+      const dest = joinSegments(outputStaticPath, fp) as FilePath
      await fs.promises.mkdir(dirname(dest), { recursive: true })
      await fs.promises.copyFile(src, dest)
      yield dest
    }
  },
 })
--- a/quartz/plugins/emitters/tagPage.tsx
+++ b/quartz/plugins/emitters/tagPage.tsx
@@ -71,8 +71,7 @@ export const TagPage: QuartzEmitterPlugin<Partial<TagPageOptions>> = (userOpts)
      return graph
    },
-    async emit(ctx, content, resources): Promise<FilePath[]> {
+    async *emit(ctx, content, resources) {
      const fps: FilePath[] = []
      const allFiles = content.map((c) => c[1].data)
      const cfg = ctx.cfg.configuration
@@ -127,16 +126,13 @@ export const TagPage: QuartzEmitterPlugin<Partial<TagPageOptions>> = (userOpts)
        }
        const content = renderPage(cfg, slug, componentData, opts, externalResources)
-        const fp = await write({
+        yield write({
          ctx,
          content,
          slug: file.data.slug!,
          ext: ".html",
        })
        fps.push(fp)
      }
      return fps
    },
  }
 }
--- a/quartz/plugins/transformers/frontmatter.ts
+++ b/quartz/plugins/transformers/frontmatter.ts
@@ -131,6 +131,7 @@ declare module "vfile" {
        created: string
        published: string
        description: string
        socialDescription: string
        publish: boolean | string
        draft: boolean | string
        lang: string
--- a/quartz/plugins/transformers/ofm.ts
+++ b/quartz/plugins/transformers/ofm.ts
@@ -675,7 +675,6 @@ export const ObsidianFlavoredMarkdown: QuartzTransformerPlugin<Partial<Options>>
                    properties: {
                      className: ["expand-button"],
                      "aria-label": "Expand mermaid diagram",
                      "aria-hidden": "true",
                      "data-view-component": true,
                    },
                    children: [
@@ -706,70 +705,13 @@ export const ObsidianFlavoredMarkdown: QuartzTransformerPlugin<Partial<Options>>
                  {
                    type: "element",
                    tagName: "div",
-                    properties: { id: "mermaid-container" },
+                    properties: { id: "mermaid-container", role: "dialog" },
                    children: [
                      {
                        type: "element",
                        tagName: "div",
                        properties: { id: "mermaid-space" },
                        children: [
                          {
                            type: "element",
                            tagName: "div",
                            properties: { className: ["mermaid-header"] },
                            children: [
                              {
                                type: "element",
                                tagName: "button",
                                properties: {
                                  className: ["close-button"],
                                  "aria-label": "close button",
                                },
                                children: [
                                  {
                                    type: "element",
                                    tagName: "svg",
                                    properties: {
                                      "aria-hidden": "true",
                                      xmlns: "http://www.w3.org/2000/svg",
                                      width: 24,
                                      height: 24,
                                      viewBox: "0 0 24 24",
                                      fill: "none",
                                      stroke: "currentColor",
                                      "stroke-width": "2",
                                      "stroke-linecap": "round",
                                      "stroke-linejoin": "round",
                                    },
                                    children: [
                                      {
                                        type: "element",
                                        tagName: "line",
                                        properties: {
                                          x1: 18,
                                          y1: 6,
                                          x2: 6,
                                          y2: 18,
                                        },
                                        children: [],
                                      },
                                      {
                                        type: "element",
                                        tagName: "line",
                                        properties: {
                                          x1: 6,
                                          y1: 6,
                                          x2: 18,
                                          y2: 18,
                                        },
                                        children: [],
                                      },
                                    ],
                                  },
                                ],
                              },
                            ],
                          },
                          {
                            type: "element",
                            tagName: "div",
--- a/quartz/plugins/types.ts
+++ b/quartz/plugins/types.ts
@@ -38,7 +38,11 @@ export type QuartzEmitterPlugin<Options extends OptionType = undefined> = (
 ) => QuartzEmitterPluginInstance
 export type QuartzEmitterPluginInstance = {
  name: string
-  emit(ctx: BuildCtx, content: ProcessedContent[], resources: StaticResources): Promise<FilePath[]>
+  emit(
    ctx: BuildCtx,
    content: ProcessedContent[],
    resources: StaticResources,
  ): Promise<FilePath[]> | AsyncGenerator<FilePath>
  /**
   * Returns the components (if any) that are used in rendering the page.
   * This helps Quartz optimize the page by only including necessary resources
--- a/quartz/processors/emit.ts
+++ b/quartz/processors/emit.ts
@@ -4,6 +4,7 @@ import { ProcessedContent } from "../plugins/vfile"
 import { QuartzLogger } from "../util/log"
 import { trace } from "../util/trace"
 import { BuildCtx } from "../util/ctx"
 import chalk from "chalk"
 export async function emitContent(ctx: BuildCtx, content: ProcessedContent[]) {
  const { argv, cfg } = ctx
@@ -14,20 +15,36 @@ export async function emitContent(ctx: BuildCtx, content: ProcessedContent[]) {
  let emittedFiles = 0
  const staticResources = getStaticResourcesFromPlugins(ctx)
-  for (const emitter of cfg.plugins.emitters) {
+  await Promise.all(
-    try {
+    cfg.plugins.emitters.map(async (emitter) => {
-      const emitted = await emitter.emit(ctx, content, staticResources)
+      try {
-      emittedFiles += emitted.length
+        const emitted = await emitter.emit(ctx, content, staticResources)
-
+        if (Symbol.asyncIterator in emitted) {
-      if (ctx.argv.verbose) {
+          // Async generator case
-        for (const file of emitted) {
+          for await (const file of emitted) {
-          console.log(`[emit:${emitter.name}] ${file}`)
+            emittedFiles++
            if (ctx.argv.verbose) {
              console.log(`[emit:${emitter.name}] ${file}`)
            } else {
              log.updateText(`Emitting output files: ${chalk.gray(file)}`)
            }
          }
        } else {
          // Array case
          emittedFiles += emitted.length
          for (const file of emitted) {
            if (ctx.argv.verbose) {
              console.log(`[emit:${emitter.name}] ${file}`)
            } else {
              log.updateText(`Emitting output files: ${chalk.gray(file)}`)
            }
          }
        }
      } catch (err) {
        trace(`Failed to emit from plugin \`${emitter.name}\``, err as Error)
      }
-    } catch (err) {
+    }),
-      trace(`Failed to emit from plugin \`${emitter.name}\``, err as Error)
+  )
    }
  }
  log.end(`Emitted ${emittedFiles} files to \`${argv.output}\` in ${perf.timeSince()}`)
 }
--- a/quartz/util/log.ts
+++ b/quartz/util/log.ts
@@ -1,26 +1,43 @@
-import { Spinner } from "cli-spinner"
+import readline from "readline"
 export class QuartzLogger {
  verbose: boolean
-  spinner: Spinner | undefined
+  private spinnerInterval: NodeJS.Timeout | undefined
  private spinnerText: string = ""
  private spinnerIndex: number = 0
  private readonly spinnerChars = ["⠋", "⠙", "⠹", "⠸", "⠼", "⠴", "⠦", "⠧", "⠇", "⠏"]
  constructor(verbose: boolean) {
    this.verbose = verbose
  }
  start(text: string) {
    this.spinnerText = text
    if (this.verbose) {
      console.log(text)
    } else {
-      this.spinner = new Spinner(`%s ${text}`)
+      this.spinnerIndex = 0
-      this.spinner.setSpinnerString(18)
+      this.spinnerInterval = setInterval(() => {
-      this.spinner.start()
+        readline.clearLine(process.stdout, 0)
        readline.cursorTo(process.stdout, 0)
        process.stdout.write(`${this.spinnerChars[this.spinnerIndex]} ${this.spinnerText}`)
        this.spinnerIndex = (this.spinnerIndex + 1) % this.spinnerChars.length
      }, 100)
    }
  }
  updateText(text: string) {
    this.spinnerText = text
  }
  end(text?: string) {
-    if (!this.verbose) {
+    if (!this.verbose && this.spinnerInterval) {
-      this.spinner!.stop(true)
+      clearInterval(this.spinnerInterval)
      this.spinnerInterval = undefined
      readline.clearLine(process.stdout, 0)
      readline.cursorTo(process.stdout, 0)
    }
    if (text) {
      console.log(text)
    }
--- a/quartz/util/og.tsx
+++ b/quartz/util/og.tsx
@@ -1,28 +1,55 @@
 import { promises as fs } from "fs"
 import { FontWeight, SatoriOptions } from "satori/wasm"
 import { GlobalConfiguration } from "../cfg"
 import { QuartzPluginData } from "../plugins/vfile"
 import { JSXInternal } from "preact/src/jsx"
-import { ThemeKey } from "./theme"
+import { FontSpecification, ThemeKey } from "./theme"
 import path from "path"
 import { QUARTZ } from "./path"
 import { formatDate } from "../components/Date"
 import { getDate } from "../components/Date"
-/**
+const defaultHeaderWeight = [700]
- * Get an array of `FontOptions` (for satori) given google font names
+const defaultBodyWeight = [400]
- * @param headerFontName name of google font used for header
+export async function getSatoriFonts(headerFont: FontSpecification, bodyFont: FontSpecification) {
- * @param bodyFontName name of google font used for body
+  // Get all weights for header and body fonts
- * @returns FontOptions for header and body
+  const headerWeights: FontWeight[] = (
- */
+    typeof headerFont === "string"
-export async function getSatoriFont(headerFontName: string, bodyFontName: string) {
+      ? defaultHeaderWeight
-  const headerWeight = 700 as FontWeight
+      : (headerFont.weights ?? defaultHeaderWeight)
-  const bodyWeight = 400 as FontWeight
+  ) as FontWeight[]
  const bodyWeights: FontWeight[] = (
    typeof bodyFont === "string" ? defaultBodyWeight : (bodyFont.weights ?? defaultBodyWeight)
  ) as FontWeight[]
-  // Fetch fonts
+  const headerFontName = typeof headerFont === "string" ? headerFont : headerFont.name
-  const headerFont = await fetchTtf(headerFontName, headerWeight)
+  const bodyFontName = typeof bodyFont === "string" ? bodyFont : bodyFont.name
-  const bodyFont = await fetchTtf(bodyFontName, bodyWeight)
+
  // Fetch fonts for all weights
  const headerFontPromises = headerWeights.map((weight) => fetchTtf(headerFontName, weight))
  const bodyFontPromises = bodyWeights.map((weight) => fetchTtf(bodyFontName, weight))
  const [headerFontData, bodyFontData] = await Promise.all([
    Promise.all(headerFontPromises),
    Promise.all(bodyFontPromises),
  ])
  // Convert fonts to satori font format and return
  const fonts: SatoriOptions["fonts"] = [
-    { name: headerFontName, data: headerFont, weight: headerWeight, style: "normal" },
+    ...headerFontData.map((data, idx) => ({
-    { name: bodyFontName, data: bodyFont, weight: bodyWeight, style: "normal" },
+      name: headerFontName,
      data,
      weight: headerWeights[idx],
      style: "normal" as const,
    })),
    ...bodyFontData.map((data, idx) => ({
      name: bodyFontName,
      data,
      weight: bodyWeights[idx],
      style: "normal" as const,
    })),
  ]
  return fonts
 }
@@ -32,32 +59,49 @@ export async function getSatoriFont(headerFontName: string, bodyFontName: string
 * @param weight what font weight to fetch font
 * @returns `.ttf` file of google font
 */
-async function fetchTtf(fontName: string, weight: FontWeight): Promise<ArrayBuffer> {
+export async function fetchTtf(
  fontName: string,
  weight: FontWeight,
 ): Promise<Buffer<ArrayBufferLike>> {
  const cacheKey = `${fontName.replaceAll(" ", "-")}-${weight}`
  const cacheDir = path.join(QUARTZ, ".quartz-cache", "fonts")
  const cachePath = path.join(cacheDir, cacheKey)
  // Check if font exists in cache
  try {
-    // Get css file from google fonts
+    await fs.access(cachePath)
-    const cssResponse = await fetch(
+    return fs.readFile(cachePath)
      `https://fonts.googleapis.com/css2?family=${fontName}:wght@${weight}`,
    )
    const css = await cssResponse.text()
    // Extract .ttf url from css file
    const urlRegex = /url\((https:\/\/fonts.gstatic.com\/s\/.*?.ttf)\)/g
    const match = urlRegex.exec(css)
    if (!match) {
      throw new Error("Could not fetch font")
    }
    // Retrieve font data as ArrayBuffer
    const fontResponse = await fetch(match[1])
    // fontData is an ArrayBuffer containing the .ttf file data (get match[1] due to google fonts response format, always contains link twice, but second entry is the "raw" link)
    const fontData = await fontResponse.arrayBuffer()
    return fontData
  } catch (error) {
-    throw new Error(`Error fetching font: ${error}`)
+    // ignore errors and fetch font
  }
  // Get css file from google fonts
  const cssResponse = await fetch(
    `https://fonts.googleapis.com/css2?family=${fontName}:wght@${weight}`,
  )
  const css = await cssResponse.text()
  // Extract .ttf url from css file
  const urlRegex = /url\((https:\/\/fonts.gstatic.com\/s\/.*?.ttf)\)/g
  const match = urlRegex.exec(css)
  if (!match) {
    throw new Error("Could not fetch font")
  }
  // fontData is an ArrayBuffer containing the .ttf file data
  const fontResponse = await fetch(match[1])
  const fontData = Buffer.from(await fontResponse.arrayBuffer())
  try {
    await fs.mkdir(cacheDir, { recursive: true })
    await fs.writeFile(cachePath, fontData)
  } catch (error) {
    console.warn(`Failed to cache font: ${error}`)
    // Continue even if caching fails
  }
  return fontData
 }
 export type SocialImageOptions = {
@@ -108,22 +152,10 @@ export type ImageOptions = {
   * what description to use as body in image
   */
  description: string
  /**
   * what fileName to use when writing to disk
   */
  fileName: string
  /**
   * what directory to store image in
   */
  fileDir: string
  /**
   * what file extension to use (should be `webp` unless you also change sharp conversion)
   */
  fileExt: string
  /**
   * header + body font to be used when generating satori image (as promise to work around sync in component)
   */
-  fontsPromise: Promise<SatoriOptions["fonts"]>
+  fonts: SatoriOptions["fonts"]
  /**
   * `GlobalConfiguration` of quartz (used for theme/typography)
   */
@@ -141,68 +173,94 @@ export const defaultImage: SocialImageOptions["imageStructure"] = (
  title: string,
  description: string,
  fonts: SatoriOptions["fonts"],
-  _fileData: QuartzPluginData,
+  fileData: QuartzPluginData,
 ) => {
-  const fontBreakPoint = 22
+  const fontBreakPoint = 32
  const useSmallerFont = title.length > fontBreakPoint
  const iconPath = `https://${cfg.baseUrl}/static/icon.png`
  // Format date if available
  const rawDate = getDate(cfg, fileData)
  const date = rawDate ? formatDate(rawDate, cfg.locale) : null
  // Get tags if available
  const tags = fileData.frontmatter?.tags ?? []
  return (
    <div
      style={{
        display: "flex",
        flexDirection: "column",
        justifyContent: "center",
        alignItems: "center",
        height: "100%",
        width: "100%",
        backgroundColor: cfg.theme.colors[colorScheme].light,
-        gap: "2rem",
+        padding: "2.5rem",
-        padding: "1.5rem 5rem",
+        fontFamily: fonts[1].name,
      }}
    >
      {/* Header Section */}
      <div
        style={{
          display: "flex",
          alignItems: "center",
-          width: "100%",
+          gap: "1rem",
-          flexDirection: "row",
+          marginBottom: "0.5rem",
          gap: "2.5rem",
        }}
      >
-        <img src={iconPath} width={135} height={135} />
+        <img
          src={iconPath}
          width={56}
          height={56}
          style={{
            borderRadius: "50%",
          }}
        />
        <div
          style={{
            display: "flex",
-            color: cfg.theme.colors[colorScheme].dark,
+            fontSize: 32,
-            fontSize: useSmallerFont ? 70 : 82,
+            color: cfg.theme.colors[colorScheme].gray,
-            fontFamily: fonts[0].name,
+            fontFamily: fonts[1].name,
            maxWidth: "70%",
            overflow: "hidden",
            textOverflow: "ellipsis",
          }}
        >
-          <p
+          {cfg.baseUrl}
            style={{
              margin: 0,
              overflow: "hidden",
              textOverflow: "ellipsis",
              whiteSpace: "nowrap",
            }}
          >
            {title}
          </p>
        </div>
      </div>
      {/* Title Section */}
      <div
        style={{
          display: "flex",
-          color: cfg.theme.colors[colorScheme].dark,
+          marginTop: "1rem",
-          fontSize: 44,
+          marginBottom: "1.5rem",
-          fontFamily: fonts[1].name,
+        }}
-          maxWidth: "100%",
+      >
-          maxHeight: "40%",
+        <h1
-          overflow: "hidden",
+          style={{
            margin: 0,
            fontSize: useSmallerFont ? 64 : 72,
            fontFamily: fonts[0].name,
            fontWeight: 700,
            color: cfg.theme.colors[colorScheme].dark,
            lineHeight: 1.2,
            display: "-webkit-box",
            WebkitBoxOrient: "vertical",
            WebkitLineClamp: 2,
            overflow: "hidden",
          }}
        >
          {title}
        </h1>
      </div>
      {/* Description Section */}
      <div
        style={{
          display: "flex",
          flex: 1,
          fontSize: 36,
          color: cfg.theme.colors[colorScheme].darkgray,
          lineHeight: 1.4,
        }}
      >
        <p
@@ -210,14 +268,80 @@ export const defaultImage: SocialImageOptions["imageStructure"] = (
            margin: 0,
            display: "-webkit-box",
            WebkitBoxOrient: "vertical",
-            WebkitLineClamp: 3,
+            WebkitLineClamp: 4,
            overflow: "hidden",
            textOverflow: "ellipsis",
          }}
        >
          {description}
        </p>
      </div>
      {/* Footer with Metadata */}
      <div
        style={{
          display: "flex",
          alignItems: "center",
          justifyContent: "space-between",
          marginTop: "2rem",
          paddingTop: "2rem",
          borderTop: `1px solid ${cfg.theme.colors[colorScheme].lightgray}`,
        }}
      >
        {/* Left side - Date */}
        <div
          style={{
            display: "flex",
            alignItems: "center",
            color: cfg.theme.colors[colorScheme].gray,
            fontSize: 28,
          }}
        >
          {date && (
            <div style={{ display: "flex", alignItems: "center" }}>
              <svg
                style={{ marginRight: "0.5rem" }}
                width="28"
                height="28"
                viewBox="0 0 24 24"
                fill="none"
                stroke="currentColor"
              >
                <rect x="3" y="4" width="18" height="18" rx="2" ry="2"></rect>
                <line x1="16" y1="2" x2="16" y2="6"></line>
                <line x1="8" y1="2" x2="8" y2="6"></line>
                <line x1="3" y1="10" x2="21" y2="10"></line>
              </svg>
              {date}
            </div>
          )}
        </div>
        {/* Right side - Tags */}
        <div
          style={{
            display: "flex",
            gap: "0.5rem",
            flexWrap: "wrap",
            justifyContent: "flex-end",
            maxWidth: "60%",
          }}
        >
          {tags.slice(0, 3).map((tag: string) => (
            <div
              style={{
                display: "flex",
                padding: "0.5rem 1rem",
                backgroundColor: cfg.theme.colors[colorScheme].highlight,
                color: cfg.theme.colors[colorScheme].secondary,
                borderRadius: "10px",
                fontSize: 24,
              }}
            >
              #{tag}
            </div>
          ))}
        </div>
      </div>
    </div>
  )
 }
--- a/quartz/util/path.ts
+++ b/quartz/util/path.ts
@@ -36,7 +36,7 @@ export type RelativeURL = SlugLike<"relative">
 export function isRelativeURL(s: string): s is RelativeURL {
  const validStart = /^\.{1,2}/.test(s)
  const validEnding = !endsWith(s, "index")
-  return validStart && validEnding && ![".md", ".html"].includes(_getFileExtension(s) ?? "")
+  return validStart && validEnding && ![".md", ".html"].includes(getFileExtension(s) ?? "")
 }
 export function getFullSlug(window: Window): FullSlug {
@@ -61,7 +61,7 @@ function sluggify(s: string): string {
 export function slugifyFilePath(fp: FilePath, excludeExt?: boolean): FullSlug {
  fp = stripSlashes(fp) as FilePath
-  let ext = _getFileExtension(fp)
+  let ext = getFileExtension(fp)
  const withoutFileExt = fp.replace(new RegExp(ext + "$"), "")
  if (excludeExt || [".md", ".html", undefined].includes(ext)) {
    ext = ""
@@ -272,10 +272,10 @@ function containsForbiddenCharacters(s: string): boolean {
 }
 function _hasFileExtension(s: string): boolean {
-  return _getFileExtension(s) !== undefined
+  return getFileExtension(s) !== undefined
 }
-function _getFileExtension(s: string): string | undefined {
+export function getFileExtension(s: string): string | undefined {
  return s.match(/\.[A-Za-z0-9]+$/)?.[0]
 }
--- a/quartz/util/theme.ts
+++ b/quartz/util/theme.ts
@@ -15,7 +15,7 @@ interface Colors {
  darkMode: ColorScheme
 }
-type FontSpecification =
+export type FontSpecification =
  | string
  | {
      name: string
@@ -90,6 +90,36 @@ export function googleFontHref(theme: Theme) {
  return `https://fonts.googleapis.com/css2?family=${bodyFont}&family=${headerFont}&family=${codeFont}&display=swap`
 }
 export interface GoogleFontFile {
  url: string
  filename: string
  extension: string
 }
 export async function processGoogleFonts(
  stylesheet: string,
  baseUrl: string,
 ): Promise<{
  processedStylesheet: string
  fontFiles: GoogleFontFile[]
 }> {
  const fontSourceRegex = /url\((https:\/\/fonts.gstatic.com\/s\/[^)]+\.(woff2|ttf))\)/g
  const fontFiles: GoogleFontFile[] = []
  let processedStylesheet = stylesheet
  let match
  while ((match = fontSourceRegex.exec(stylesheet)) !== null) {
    const url = match[1]
    const [filename, extension] = url.split("/").pop()!.split(".")
    const staticUrl = `https://${baseUrl}/static/fonts/${filename}.${extension}`
    processedStylesheet = processedStylesheet.replace(url, staticUrl)
    fontFiles.push({ url, filename, extension })
  }
  return { processedStylesheet, fontFiles }
 }
 export function joinStyles(theme: Theme, ...stylesheet: string[]) {
  return `
 ${stylesheet.join("\n\n")}
Author	SHA1	Message	Date
Jacky Zhao	3173d185ed	make og images look nice	2025-03-13 10:17:19 -07:00
Jacky Zhao	de727b4686	use readline instead	2025-03-13 08:46:55 -07:00
Jacky Zhao	07ffc8681e	replace spinner, use disk cache for fonts	2025-03-13 08:38:16 -07:00
Jacky Zhao	f301eca9a7	custom font spec	2025-03-12 22:56:59 -07:00
Jacky Zhao	1fb7756c49	fix	2025-03-12 22:26:39 -07:00
Jacky Zhao	c5a8b199ae	make emitters async generators	2025-03-12 13:31:43 -07:00
Jacky Zhao	5d50282124	checkpoint	2025-03-12 10:08:18 -07:00
Jacky Zhao	2718ab9019	feat: flex component, document higher-order layout components Some checks are pending Build and Test / build-and-test (macos-latest) (push) Waiting to run Details Build and Test / build-and-test (windows-latest) (push) Waiting to run Details Build and Test / build-and-test (ubuntu-latest) (push) Has been skipped Details Build and Test / publish-tag (push) Has been skipped Details	2025-03-11 14:56:43 -07:00
Jacky Zhao	87b803790c	fix(mermaid): themechange detector + expand simplification	2025-03-11 11:45:45 -07:00
Jacky Zhao	e59181c3aa	docs(explorer): update to account for new client side explorer)	2025-03-11 10:20:15 -07:00