JWT Decoder

Decode and inspect JSON Web Tokens. View header, payload, and expiration status.

Frequently Asked Questions

Is it safe to paste my JWT here?

Yes — decoding happens entirely in your browser. No data is sent to any server. However, never share JWTs publicly as they may grant access to systems.

Can this tool verify JWT signatures?

This tool decodes and displays the JWT contents. Full signature verification requires the signing key, which is intentionally not collected here for security.

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