JWT Decoder — Inspect Tokens in Your Browser
Decode and inspect JSON Web Tokens locally without sending data to a server. View header and payload as an interactive tree, check expiration, and copy decoded JSON — unlike jwt.io, your token never leaves your device.
Your data never leaves your browser
JWT token
Decoded JSON
About this tool
Decode onlyTree inspectorExpiry badgeNo server uploadCopy JSON
How to use
- Paste a JWT token (with or without Bearer prefix).
- Switch between Inspector and JSON tabs on the output side.
- Review header algorithm, payload claims, and expiration status.
Examples
Sample JWT structure
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIn0.signature
{ "header": { "alg": "HS256" }, "payload": { "sub": "1234567890" } }