Decodificar JWT — Decodificar JSON Web Tokens
Decodifica e inspecciona tokens JWT para ver cabecera y payload.
Paste JWT Token
Your token is decoded locally in your browser. We never see it.
JWT Structure
A JWT consists of three parts separated by dots:
header.payload.signature
- Header: Token type (JWT) and signing algorithm
- Payload: Claims (user data, expiry, etc.)
- Signature: Cryptographic signature for verification
💡 Your token is decoded entirely in your browser. We never send it to any server.
Frequently Asked Questions about JWT Decoder
- Is JWT Decoder completely free to use?
- Yes, JWT Decoder is 100% free with no sign-up, no watermarks, and no usage limits.
- Are my uploaded files safe and private?
- Yes. Files are uploaded over HTTPS, processed securely on our servers, and permanently deleted immediately after your download. We never store, view, or share your files.
- What is the maximum file size?
- You can upload files up to 1 MB. For larger files, consider compressing or splitting them first.
- Is my sensitive data processed locally?
- Yes, all cryptographic operations run in your browser using the Web Crypto API. Your keys and secrets never leave your device.
- Does JWT Decoder work on mobile and tablet?
- Yes, JWT Decoder is fully responsive and works in all modern browsers on desktop, tablet, and mobile.
Files are processed securely and permanently deleted after download. Never stored or shared.