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JWT decoder

Decode a JWT's header and payload and interpret its expiry (exp). The token is never sent.

JWT decoder

The JWT token's Header & payload, then decodes and shows it and interprets the expiration (exp).
Signatures are not verified. The token is not sent Decoded entirely in your browser.

What is JWT Decoder?

A tool that decodes and shows a JWT (JSON Web Token)'s header, payload, and expiry time. Use it to debug login tokens.

How it works

1 Paste the JWT token string.
2 Check the header, payload, and expiry info.

Frequently Asked Questions

Is the token sent to a server? ⌄

No. It is decoded only in your browser and is not transmitted.

Does it verify the signature? ⌄

It shows the decoded content. Signature verification requires the secret key.

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