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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]].
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`.
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.
## 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
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>
> )
> }
> ```
This functionality is provided by the [[CustomOgImages]] plugin. See the plugin page for customization options.

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@ -0,0 +1,352 @@
---
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 headerFont = joinSegments(QUARTZ, "static", "Newsreader.woff2")
> const bodyFont = joinSegments(QUARTZ, "static", "Newsreader.woff2")
>
> export async function getSatoriFont(cfg: GlobalConfiguration): Promise<SatoriOptions["fonts"]> {
> const headerWeight: FontWeight = 700
> const bodyWeight: FontWeight = 400
>
> const [header, body] = await Promise.all(
> [headerFont, bodyFont].map((font) =>
> fs.promises.readFile(path.resolve(font))
> ),
> )
>
> 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
## 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>
)
}
```

2
quartz/components/Breadcrumbs.tsx
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@ -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(

8
quartz/plugins/emitters/404.tsx
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@ -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 [
await write({
yield write({
ctx,
content: renderPage(cfg, slug, componentData, opts, externalResources),
slug,
ext: ".html",
}),
]
})
},
}
}

9
quartz/plugins/emitters/aliases.ts
View File

@ -18,15 +18,13 @@ export const AliasRedirects: QuartzEmitterPlugin = () => ({
return graph
},
async emit(ctx, content, _resources): Promise<FilePath[]> {
const fps: FilePath[] = []
async *emit(ctx, content, _resources) {
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
},
})

7
quartz/plugins/emitters/assets.ts
View File

@ -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
},
}
}

4
quartz/plugins/emitters/cname.ts
View File

@ -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[]
},
})

75
quartz/plugins/emitters/componentResources.ts
View File

@ -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[]> {
const promises: Promise<FilePath>[] = []
async *emit(ctx, _content, _resources) {
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
googleFontsStyleSheet = await (
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`,
if (!cfg.baseUrl) {
throw new Error(
"baseUrl must be defined when using Google Fonts without cfg.theme.cdnCaching",
)
promises.push(
fetch(url)
.then((res) => {
if (!res.ok) {
throw new Error(`Failed to fetch font`)
}
return res.arrayBuffer()
})
.then((buf) =>
write({
ctx,
slug: joinSegments("static", "fonts", filename) as FullSlug,
ext: `.${ext}`,
content: Buffer.from(buf),
}),
),
const { processedStylesheet, fontFiles } = await processGoogleFonts(
googleFontsStyleSheet,
cfg.baseUrl,
)
googleFontsStyleSheet = processedStylesheet
// Download and save font files
for (const fontFile of fontFiles) {
const res = await fetch(fontFile.url)
if (!res.ok) {
throw new Error(`failed to fetch font ${fontFile.filename}`)
}
const buf = await res.arrayBuffer()
yield write({
ctx,
slug: joinSegments("static", "fonts", fontFile.filename) as FullSlug,
ext: `.${fontFile.extension}`,
content: Buffer.from(buf),
})
}
}
@ -267,13 +259,13 @@ export const ComponentResources: QuartzEmitterPlugin = () => {
...componentResources.css,
styles,
)
const [prescript, postscript] = await Promise.all([
joinScripts(componentResources.beforeDOMLoaded),
joinScripts(componentResources.afterDOMLoaded),
])
promises.push(
write({
yield write({
ctx,
slug: "index" as FullSlug,
ext: ".css",
@ -291,21 +283,18 @@ export const ComponentResources: QuartzEmitterPlugin = () => {
include: Features.MediaQueries,
}).code.toString(),
}),
write({
yield 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)
})
},
}
}

23
quartz/plugins/emitters/contentIndex.tsx
View File

@ -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(
await write({
yield write({
ctx,
content: generateSiteMap(cfg, linkIndex),
slug: "sitemap" as FullSlug,
ext: ".xml",
}),
)
})
}
if (opts?.enableRSS) {
emitted.push(
await write({
yield write({
ctx,
content: generateRSSFeed(cfg, linkIndex, opts.rssLimit),
slug: (opts?.rssSlug ?? "index") as FullSlug,
ext: ".xml",
}),
)
})
}
const fp = joinSegments("static", "contentIndex") as FullSlug
@ -173,16 +168,12 @@ export const ContentIndex: QuartzEmitterPlugin<Partial<Options>> = (opts) => {
}),
)
emitted.push(
await write({
yield write({
ctx,
content: JSON.stringify(simplifiedIndex),
slug: fp,
ext: ".json",
}),
)
return emitted
})
},
externalResources: (ctx) => {
if (opts?.enableRSS) {

9
quartz/plugins/emitters/contentPage.tsx
View File

@ -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
},
}
}

8
quartz/plugins/emitters/folderPage.tsx
View File

@ -69,8 +69,7 @@ export const FolderPage: QuartzEmitterPlugin<Partial<FolderPageOptions>> = (user
return graph
},
async emit(ctx, content, resources): Promise<FilePath[]> {
const fps: FilePath[] = []
async *emit(ctx, content, resources) {
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
},
}
}

13
quartz/plugins/emitters/ogImage.tsx
View File

@ -1,7 +1,7 @@
import { QuartzEmitterPlugin } from "../types"
import { i18n } from "../../i18n"
import { unescapeHTML } from "../../util/escape"
import { FilePath, FullSlug, getFileExtension } from "../../util/path"
import { FullSlug, getFileExtension } from "../../util/path"
import { ImageOptions, SocialImageOptions, defaultImage, getSatoriFont } from "../../util/og"
import { getFontSpecificationName } from "../../util/theme"
import sharp from "sharp"
@ -52,10 +52,8 @@ export const CustomOgImages: QuartzEmitterPlugin<Partial<SocialImageOptions>> =
getQuartzComponents() {
return []
},
async emit(ctx, content, _resources) {
async *emit(ctx, content, _resources) {
const cfg = ctx.cfg.configuration
const emittedFiles: FilePath[] = []
const headerFont = getFontSpecificationName(cfg.theme.typography.header)
const bodyFont = getFontSpecificationName(cfg.theme.typography.body)
const fonts = await getSatoriFont(headerFont, bodyFont)
@ -88,17 +86,13 @@ export const CustomOgImages: QuartzEmitterPlugin<Partial<SocialImageOptions>> =
fullOptions,
)
const fp = await write({
yield write({
ctx,
content: stream,
slug: `${slug}-og-image` as FullSlug,
ext: ".webp",
})
emittedFiles.push(fp)
}
return emittedFiles
},
externalResources: (ctx) => {
if (!ctx.cfg.configuration.baseUrl) {
@ -115,7 +109,6 @@ export const CustomOgImages: QuartzEmitterPlugin<Partial<SocialImageOptions>> =
? `https://${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"}`

17
quartz/plugins/emitters/static.ts
View File

@ -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"), {
recursive: true,
dereference: true,
})
return fps.map((fp) => joinSegments(argv.output, "static", fp)) as FilePath[]
const outputStaticPath = joinSegments(argv.output, "static")
await fs.promises.mkdir(outputStaticPath, { recursive: true })
for (const fp of fps) {
const src = joinSegments(staticPath, 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
}
},
})

8
quartz/plugins/emitters/tagPage.tsx
View File

@ -71,8 +71,7 @@ export const TagPage: QuartzEmitterPlugin<Partial<TagPageOptions>> = (userOpts)
return graph
},
async emit(ctx, content, resources): Promise<FilePath[]> {
const fps: FilePath[] = []
async *emit(ctx, content, resources) {
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
},
}
}

6
quartz/plugins/types.ts
View File

@ -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

20
quartz/processors/emit.ts
View File

@ -14,20 +14,34 @@ 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(
cfg.plugins.emitters.map(async (emitter) => {
try {
const emitted = await emitter.emit(ctx, content, staticResources)
if (Symbol.asyncIterator in emitted) {
// Async generator case
const files: string[] = []
for await (const file of emitted) {
files.push(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}] ${file}`)
}
}
}
} catch (err) {
trace(`Failed to emit from plugin \`${emitter.name}\``, err as Error)
}
}
}),
)
log.end(`Emitted ${emittedFiles} files to \`${argv.output}\` in ${perf.timeSince()}`)
}

30
quartz/util/og.tsx
View File

@ -15,8 +15,10 @@ export async function getSatoriFont(headerFontName: string, bodyFontName: string
const bodyWeight = 400 as FontWeight
// Fetch fonts
const headerFont = await fetchTtf(headerFontName, headerWeight)
const bodyFont = await fetchTtf(bodyFontName, bodyWeight)
const [headerFont, bodyFont] = await Promise.all([
fetchTtf(headerFontName, headerWeight),
fetchTtf(bodyFontName, bodyWeight),
])
// Convert fonts to satori font format and return
const fonts: SatoriOptions["fonts"] = [
@ -26,13 +28,23 @@ export async function getSatoriFont(headerFontName: string, bodyFontName: string
return fonts
}
// Cache for memoizing font data
const fontCache = new Map<string, Promise<ArrayBuffer>>()
/**
* Get the `.ttf` file of a google font
* @param fontName name of google font
* @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<ArrayBuffer> {
const cacheKey = `${fontName}-${weight}`
if (fontCache.has(cacheKey)) {
return fontCache.get(cacheKey)!
}
// If not in cache, fetch and store the promise
const fontPromise = (async () => {
try {
// Get css file from google fonts
const cssResponse = await fetch(
@ -48,16 +60,16 @@ async function fetchTtf(fontName: string, weight: FontWeight): Promise<ArrayBuff
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
const fontResponse = await fetch(match[1])
return await fontResponse.arrayBuffer()
} catch (error) {
throw new Error(`Error fetching font: ${error}`)
}
})()
fontCache.set(cacheKey, fontPromise)
return fontPromise
}
export type SocialImageOptions = {

30
quartz/util/theme.ts
View File

@ -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")}