(hopefully) the easiest way to generate OpenGraph images from your Astro site
Define your OpenGraph image with HTML/CSS, inline in your Astro components.
# First, run this command to install the integration:
npx astro add astro-opengraph-image
# Next, you will want one or more fonts to use in your images,
# I like the fonts available at https://www.npmjs.com/org/fontsource, e.g.:
npm install @fontsource/inter// Then, update your astro.config.{mjs|ts} file to configure the integration:
import { defineConfig } from "astro/config";
import opengraphImage from "astro-opengraph-image";
import { readFile } from "node:fs/promises";
export default defineConfig({
integrations: [
opengraphImage({
// what color do you want your background to be?
background: "#000000",
// what size do you want your images to be?
// 1200x630 is a good default across platforms,
// and 3x scale is a convenient choice.
width: 1200,
height: 630,
scale: 3,
// the fonts you picked before. you will have to include the particular
// weights and variants you want to use.
fonts: [
{
name: "Inter",
data: await readFile(
"node_modules/@fontsource/inter/files/inter-latin-400-normal.woff",
),
style: "normal",
weight: 400,
},
{
name: "Inter",
data: await readFile(
"node_modules/@fontsource/inter/files/inter-latin-700-normal.woff",
),
style: "normal",
weight: 700,
},
],
}),
],
});---
// Lastly, inside your <head>, render the OgImage component to
// specify what you want in your image:
import { OgImage } from "astro-opengraph-image/components";
---
<!doctype html>
<html>
<head>
...
<OgImage>
<h1>the page</h1>
<p>this is the page</p>
<style is:inline>
h1 {
color: red;
}
</style>
</OgImage>
...
</head>
<body>...</body>
</html>Note
Your image is only influenced by code inside the <OgImage> tag.
This means all relevant styles must live inside the tag.
Additionally, your styles must always have the is:inline attribute to convince Astro
not to modify or hoist them.
Note
astro-opengraph-image uses the Satori HTML layout engine and therefore supports the subset of HTML/CSS that Satori implements.