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Fix broken OG image on social link previews #3

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Merged
finallyjay merged 1 commit into from
Jun 3, 2026
Merged

Fix broken OG image on social link previews #3

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3 changes: 3 additions & 0 deletions astro.config.mjs
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,9 @@ import tailwindcss from "@tailwindcss/vite";
// Server output so our /api routes run as Vercel serverless functions.
// All daily.dev calls go through them, keeping the token off the client.
export default defineConfig({
// Canonical production URL — used as a fallback when building absolute OG/
// canonical URLs (behind Vercel's proxy the request host can read as localhost).
site: "https://daily-dev-roulette.vercel.app",
output: "server",
adapter: vercel({
// Inject the Vercel Web Analytics script in production.
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13 changes: 10 additions & 3 deletions src/layouts/Layout.astro
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Expand Up @@ -14,9 +14,16 @@ const {
profile = null,
} = Astro.props;

// Absolute URLs resolved at request time, so OG works on any deploy domain.
const canonical = new URL(Astro.url.pathname, Astro.url.origin).href;
const ogImage = new URL("/og-image.png", Astro.url.origin).href;
// Absolute URLs for OG/canonical. Behind Vercel's proxy Astro.url.origin reads
// as "localhost", which breaks link previews, so prefer the forwarded host
// headers and fall back to the configured `site` (then Astro.url.origin).
const forwardedHost = Astro.request.headers.get("x-forwarded-host");
const forwardedProto = Astro.request.headers.get("x-forwarded-proto") ?? "https";
const origin = forwardedHost
? `${forwardedProto}://${forwardedHost}`
: (Astro.site?.origin ?? Astro.url.origin);
Comment on lines +20 to +24
const canonical = new URL(Astro.url.pathname, origin).href;
const ogImage = new URL("/og-image.png", origin).href;
---

<!doctype html>
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