JWT Decoder
Inspect a token’s header, payload and time claims.
How to use JWT Decoder
Inspect test-token claims while debugging authentication.
- Select Load example or paste your own test input.
- Choose Decode and review the available options.
- Run the selected action; review any validation message.
- Inspect the output before copying, printing or downloading it.
A small example
Load the unsigned demonstration token, then inspect header, payload and time claims
When the result looks wrong
Decoding never verifies authenticity. Reject unsigned tokens and verify signatures, issuer, audience and validity on the server.
Questions about JWT Decoder
Is my input uploaded?
File and text processing runs in your browser. Opening the website still loads application assets from its host.
What if the result looks wrong?
Decoding never verifies authenticity. Reject unsigned tokens and verify signatures, issuer, audience and validity on the server.
Can I use sensitive production data?
Prefer non-sensitive test data. Never paste live access tokens, passwords or confidential documents into a site without assessing its code and environment.
Supported input and output
Text input; check the selected action and example for the expected syntax.
See the result panel and available copy or download controls for the selected action.