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忆云竹

JWT decoder

Inspect a JWT header and payload separately, and read issued-at, not-before and expiry claims as UTC dates.

Decoded only. The signature has not been verified; these claims do not establish trust or validity.

Updates as you type or change an option

Header

Payload

Processed in this browser. Nothing is uploaded or saved.

About this tool

Inspect a JWT header and payload separately, and read issued-at, not-before and expiry claims as UTC dates.

How to use

Paste a JWT with three dot-separated parts. The header and payload are formatted as JSON and can be copied separately. Numeric iat, nbf and exp claims also appear as UTC dates.

This tool does not verify the signature, issuer, audience or revocation status. Anyone can alter unverified claims, so the display does not establish that a token is trusted or valid. Tokens remain in page memory. Input limit: 128 KiB.

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