JWT Decoder
Decode and inspect JSON Web Token payloads.
Text input
How it works
1
Paste your JWT string
2
The header and payload are decoded instantly
3
Review the claims and expiration data
About JWT Decoder
Decode JSON Web Tokens (JWT) to inspect their header and payload. See claims like issuer, expiration, and custom data without needing a secret key. Essential for debugging authentication flows. Powered by JustUse.me — free, ad-free, and private. This tool runs entirely in your browser. Your files are never uploaded to any server.
Frequently asked questions
Is it safe to paste my JWT here?
Yes. Decoding happens entirely in your browser. Your token is never sent to any server.
Can this verify the JWT signature?
This tool decodes and displays the token contents. Signature verification requires the secret key, which is not needed for inspection.