Foreverfile

Store a file forever on Arweave. Unlock the app with your Arweave JWK. The private key stays in the current browser tab — it is never written to disk or sent to a server.

Requirements

• Node.js 20.9 or newer
• An Arweave wallet JSON Web Key (wallet.json) with enough AR to pay the L1 data fee

Setup

npm install
npm run dev

Open http://localhost:3000. Paste the JWK or choose the key file, then unlock.

npm test
npm run build

How it works

1. The JWK is parsed in the browser (kty: RSA plus n, e, d, p, q, dp, dq, qi).
2. The address is derived with arweave-js. Balance and a fee quote come from arweave.net.
3. The file is signed locally and uploaded in chunks to Arweave L1.
4. Uploads are tagged App-Name: foreverfile so this wallet’s files can be listed via GraphQL.

Lock or close the tab to drop the key from memory. Do not commit wallet.json.

Deploy

Vercel detects Next.js. The previous Nx output path is gone — vercel.json now uses the stock Next build.