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fix(og): fall back to default pfp when a cast avatar is missing/invalid #18

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Merged
arcabotai merged 1 commit into from
Jun 22, 2026
Merged

fix(og): fall back to default pfp when a cast avatar is missing/invalid #18

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19 changes: 18 additions & 1 deletion src/app/api/og/route.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -43,7 +43,24 @@ export async function GET(req: NextRequest) {
if (type === 'cast') {
const textLines = truncateLongWord(text, 80)?.split(/\\n|\n/) || [''];

const avatarImage = await fetch(new URL(avatar, import.meta.url)).then((res) => res.arrayBuffer());
// Load the author avatar defensively — a missing, unreachable, or non-image
// avatar must not 500 the whole share-preview image. Fall back to the default
// pfp.
const loadAvatar = async (): Promise<ArrayBuffer> => {
if (avatar && /^https?:\/\//.test(avatar)) {
try {
const res = await fetch(avatar);
const contentType = res.headers.get("content-type") || "";
if (res.ok && contentType.startsWith("image/")) {
return await res.arrayBuffer();
}
} catch (e) {
// fall through to the default avatar
}
}
return fetch(new URL("../../../../public/user.png", import.meta.url)).then((res) => res.arrayBuffer());
};
const avatarImage = await loadAvatar();

const farcasterLogo = await fetch(
new URL("../../../../public/farcaster.png", import.meta.url)
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