Developer

JWT DECODER

Decode JSON Web Tokens (JWT) locally in your browser to inspect headers, payload claims, and expiry timestamps.

JWT Decoder parses claims locally in your browser. Signature verification requires server secret keys and is not performed.

HOW TO USE JWT

01

Step 1

Paste any encoded JWT string into the input textarea.

02

Step 2

The decoder splits the 3 dot-separated parts (Header, Payload, Signature).

03

Step 3

View formatted JSON claims, algorithm header, and UTC expiration dates.

FREQUENTLY ASKED QUESTIONS

Is my JWT token sent to any external server?

No, JWT decoding happens 100% locally in your browser using JavaScript string parsing.

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