Instant decoding
Paste the token and see header and payload decoded in real time.
What is a JWT (JSON Web Token)?
JWT (JSON Web Token) is an open standard (RFC 7519) for transmitting information between parties as a compact JSON object. It is widely used for authentication and authorization in REST APIs. A JWT has three parts separated by dots: Header (algorithm and type), Payload (claims/data) and Signature (verification signature).
Decoder features
Claims table
Inspect each claim with name, description and value — Unix timestamps converted to date and time.
Expiration check
Shows whether the token is expired, with the date and time from the exp claim.
100% in the browser
No data is sent to servers. All processing happens locally.
Free, no sign-up
Use it as much as you want, with no account and no usage limits.
Responsive
Works on desktop, tablet and phone.