Free JWT Decoder
Decode and inspect JSON Web Tokens.
About the JWT Decoder
Free JWT decoder. Paste a JSON Web Token to view its header and payload, decoded and pretty-printed, with human-readable expiry times. Decoding happens in your browser.
How it works
- 1
Paste a JWT
Add the full token.
- 2
Inspect
View decoded header and payload.
- 3
Check expiry
See issued and expiry times.
Frequently asked questions
No. It decodes the header and payload for inspection but does not verify the signature — that requires your secret or public key and should be done server-side.
No. Decoding happens entirely in your browser; your token never leaves your device.