JWT Decoder
Decode and inspect JWT tokens. View header, payload, and verify signatures.
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Zenovay
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Frequently Asked Questions
Is my JWT safe?▾
Yes, decoding happens entirely in your browser. No data is ever sent to any server.
Can I verify signatures?▾
This tool decodes the token for inspection. Signature verification requires the secret key, which should never be pasted into a web tool.
What JWT formats are supported?▾
This tool supports standard JWTs (JSON Web Tokens) with three Base64url-encoded segments separated by dots.