Files
020d79bb27 [examples] migrate cloudinary to vercel-blob (#93762)
## Summary

Replaces the Cloudinary-backed image gallery example with a Vercel
Blob–backed equivalent. The migration is driven by the broader move of
[`vercel/nextconf-image-gallery`](https://github.com/vercel/nextconf-image-gallery)
(the deployed companion to this example) off Cloudinary.

- Renamed `examples/with-cloudinary` → `examples/with-vercel-blob` via
`git mv` (history preserved).
- Images are discovered at build time via the `@vercel/blob` SDK's
`list()` API, then probed with
[`sharp`](https://github.com/lovell/sharp) for dimensions and to
pre-generate base64 blur placeholders. `next/image` (Vercel's image
optimizer) handles resizing — no Cloudinary `c_scale,w_*` transform
URLs.
- `ImageProps` is now `{ id, url, width, height, blurDataUrl }` (was `{
public_id, format, ... }`).
- `utils/cachedImages.ts` does the listing + dimension probe + blur
placeholder generation.
- Removed `utils/cloudinary.ts` and `utils/generateBlurPlaceholder.ts`.
- `next.config.js` `remotePatterns` now allows
`*.public.blob.vercel-storage.com`.
- Deps: dropped `cloudinary`, `imagemin`, `imagemin-jpegtran`; added
`@vercel/blob` and `sharp`.
- `.env.local.example` reduced to a single `BLOB_READ_WRITE_TOKEN`.
- README rewritten: blob description, deploy-button env, setup steps,
references.

## Test plan

- [x] `npx create-next-app --example with-vercel-blob ./blob-app` clones
cleanly
- [x] After populating a blob store and `.env.local`, `npm run dev`
renders the gallery with blur placeholders
- [x] `npm run build` succeeds (sharp probe + placeholder generation
runs at build time)
- [x] Vercel deploy button flow prompts only for `BLOB_READ_WRITE_TOKEN`

---------

Co-authored-by: Claude Opus 4.7 (1M context) <[email protected]>
Co-authored-by: Joseph <[email protected]>
2026-05-12 11:01:10 +02:00

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TypeScript

import Document, { Head, Html, Main, NextScript } from "next/document";
class MyDocument extends Document {
render() {
return (
<Html lang="en">
<Head>
<link rel="icon" href="/favicon.ico" />
<meta
name="description"
content="See pictures from Next.js Conf and the After Party."
/>
<meta property="og:site_name" content="nextjsconf-pics.vercel.app" />
<meta
property="og:description"
content="See pictures from Next.js Conf and the After Party."
/>
<meta property="og:title" content="Next.js Conf 2022 Pictures" />
<meta name="twitter:card" content="summary_large_image" />
<meta name="twitter:title" content="Next.js Conf 2022 Pictures" />
<meta
name="twitter:description"
content="See pictures from Next.js Conf and the After Party."
/>
</Head>
<body className="bg-black antialiased">
<Main />
<NextScript />
</body>
</Html>
);
}
}
export default MyDocument;