Code & data
JWT decoder
Decode a JWT header and payload locally. Inspect claims, issued and expiry dates, and token structure without sending the token to a server.
Free to useNo sign-upOn your device
Opening your workspace…
How to use it
- 01
Paste a JWT with three dot-separated sections.
- 02
Decode the header and payload and inspect the date claims.
- 03
Use a trusted signature-verification system before relying on token claims.
A few useful answers
Does this verify the signature?
No. Decoding only makes the contents readable. It does not prove who issued the token or whether it was modified.
Can a JWT contain private information?
Yes. Avoid sharing tokens. This tool processes them locally and does not save them.