Does it verify the signature?

No. Verification needs the secret key; this tool only decodes the content locally for inspection, so do not use it to judge trust.

Yes. Decoding happens entirely in your browser with no upload, but avoid pasting production tokens on shared devices.

Are my files or data uploaded?

No. Everything runs locally in your browser with no network upload, and is discarded when you close the page.

Do I need to sign up or pay?

No. The site is completely free, needs no account and has no usage limits.

🎫

🎫JWT Decoder - Decode JSON Web Tokens Online

Split a JWT (JSON Web Token) into its header and payload and pretty-print them, converting exp, iat and nbf timestamps into readable dates with an expiry badge. Everything runs in your browser and the token is never sent anywhere. Note: it only decodes and does not verify the signature.

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How to use JWT Decoder

1Paste a full JWT (like xxxxx.yyyyy.zzzzz)
2Read the decoded header and payload
3Check the expiry and other time claims

FAQ

Does it verify the signature?: No. Verification needs the secret key; this tool only decodes the content locally for inspection, so do not use it to judge trust.
Is the token safe?: Yes. Decoding happens entirely in your browser with no upload, but avoid pasting production tokens on shared devices.
Are my files or data uploaded?: No. Everything runs locally in your browser with no network upload, and is discarded when you close the page.
Do I need to sign up or pay?: No. The site is completely free, needs no account and has no usage limits.