Skip to content

fix(layout): set Fastify logo as og:image for social shares #486

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
ilteoood merged 1 commit into from
Aug 19, 2026
Merged

fix(layout): set Fastify logo as og:image for social shares #486

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
3 changes: 2 additions & 1 deletion package.json
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,8 @@
"lint": "biome check",
"lint:fix": "biome check --write",
"check": "astro check",
"build:data": "node scripts/postinstall.mjs"
"build:data": "node scripts/postinstall.mjs",
"generate:og-assets": "node scripts/generate-og-assets.mjs"
},
"dependencies": {
"@astrojs/mdx": "^7.0.5",
Expand Down
Binary file added public/apple-touch-icon.png
View file
Open in desktop
Loading
Sorry, something went wrong. Reload?
Sorry, we cannot display this file.
Sorry, this file is invalid so it cannot be displayed.
Binary file added public/favicon-32x32.png
View file
Open in desktop
Loading
Sorry, something went wrong. Reload?
Sorry, we cannot display this file.
Sorry, this file is invalid so it cannot be displayed.
Binary file added public/favicon.ico
View file
Open in desktop
Binary file not shown.
Binary file added public/og-image.png
View file
Open in desktop
Loading
Sorry, something went wrong. Reload?
Sorry, we cannot display this file.
Sorry, this file is invalid so it cannot be displayed.
19 changes: 19 additions & 0 deletions public/site.webmanifest
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,19 @@
{
"name": "Fastify",
"short_name": "Fastify",
"description": "Fast and low overhead web framework, for Node.js",
"start_url": "/",
"display": "standalone",
"background_color": "#0a0b0d",
"theme_color": "#0a0b0d",
"icons": [
{ "src": "/favicon-32x32.png", "sizes": "32x32", "type": "image/png" },
{ "src": "/apple-touch-icon.png", "sizes": "180x180", "type": "image/png" },
{
"src": "/og-image.png",
"sizes": "1200x630",
"type": "image/png",
"purpose": "any"
}
]
}
47 changes: 47 additions & 0 deletions scripts/generate-og-assets.mjs
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,47 @@
#!/usr/bin/env node
// @ts-nocheck
import { readFile, writeFile } from "node:fs/promises";
import sharp from "sharp";

const ROOT = new URL("..", import.meta.url).pathname;
const SRC = `${ROOT}public/favicon.svg`;
const OUT = `${ROOT}public`;

const svg = await readFile(SRC);

// 1200x630 OG card: dark bg, logo centered inside a rounded inset square.
const OG_W = 1200;
const OG_H = 630;
const LOGO_PX = 360;
const logoB64 = svg.toString("base64");
const ogSvg = Buffer.from(
`<svg xmlns="http://www.w3.org/2000/svg" width="${OG_W}" height="${OG_H}">` +
`<rect width="100%" height="100%" fill="#0a0b0d"/>` +
`<rect x="${(OG_W - LOGO_PX) / 2}" y="${(OG_H - LOGO_PX) / 2}" width="${LOGO_PX}" height="${LOGO_PX}" rx="${LOGO_PX * 0.21}" fill="#0a0b0d" stroke="#1f2125" stroke-width="2"/>` +
`<image href="data:image/svg+xml;base64,${logoB64}" x="${(OG_W - LOGO_PX) / 2}" y="${(OG_H - LOGO_PX) / 2}" width="${LOGO_PX}" height="${LOGO_PX}"/>` +
`</svg>`,
);
await sharp(ogSvg).png().toFile(`${OUT}/og-image.png`);

await sharp(svg).resize(180, 180).png().toFile(`${OUT}/apple-touch-icon.png`);

await sharp(svg).resize(32, 32).png().toFile(`${OUT}/favicon-32x32.png`);

// Wrap a 32x32 PNG in a minimal ICO container (1 image, type=icon) so Safari
// and IE accept it as a real .ico instead of guessing by filename.
const png = await sharp(svg).resize(32, 32).png().toBuffer();
const header = Buffer.alloc(6 + 16);
header.writeUInt16LE(0, 0);
header.writeUInt16LE(1, 2);
header.writeUInt16LE(1, 4);
header.writeUInt8(32, 6);
header.writeUInt8(32, 7);
header.writeUInt16LE(1, 10);
header.writeUInt16LE(32, 12);
header.writeUInt32LE(png.length, 14);
header.writeUInt32LE(6 + 16, 18);
await writeFile(`${OUT}/favicon.ico`, Buffer.concat([header, png]));

console.log(
"wrote: og-image.png, apple-touch-icon.png, favicon-32x32.png, favicon.ico",
);
29 changes: 27 additions & 2 deletions src/layouts/BaseLayout.astro
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -18,20 +18,45 @@ const {
description = SITE.description,
} = Astro.props;
const canonical = new URL(Astro.url.pathname, Astro.site ?? SITE.url).href;
const socialImage = new URL(withBase("/og-image.png"), Astro.site ?? SITE.url).href;
const jsonLd = JSON.stringify({
"@context": "https://schema.org",
"@type": "WebSite",
name: SITE.name,
url: SITE.url,
description: SITE.description,
});
---
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<link rel="icon" type="image/svg+xml" href={withBase('/favicon.svg')} />
<title>{title}</title>
<meta name="description" content={description} />
<link rel="canonical" href={canonical} />
<link rel="icon" type="image/svg+xml" href={withBase('/favicon.svg')} />
<link rel="icon" type="image/x-icon" href={withBase('/favicon.ico')} sizes="any" />
<link rel="icon" type="image/png" sizes="32x32" href={withBase('/favicon-32x32.png')} />
<link rel="apple-touch-icon" sizes="180x180" href={withBase('/apple-touch-icon.png')} />
<link rel="manifest" href={withBase('/site.webmanifest')} />
<meta name="theme-color" content="#0a0b0d" />
<meta property="og:type" content="website" />
<meta property="og:site_name" content={SITE.name} />
<meta property="og:locale" content="en_US" />
<meta property="og:url" content={canonical} />
<meta property="og:title" content={title} />
<meta property="og:description" content={description} />
<meta name="theme-color" content="#0a0b0d" />
<meta property="og:image" content={socialImage} />
<meta property="og:image:width" content="1200" />
<meta property="og:image:height" content="630" />
<meta property="og:image:alt" content={`${SITE.name} logo`} />
<meta name="twitter:card" content="summary_large_image" />
<meta name="twitter:site" content="@fastifyjs" />
<meta name="twitter:title" content={title} />
<meta name="twitter:description" content={description} />
<meta name="twitter:image" content={socialImage} />
<script type="application/ld+json" set:html={jsonLd} />
<script is:inline>
(() => {
try {
Expand Down
Loading