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JWT Decoder
Paste any JWT token to instantly decode the header and payload sections. View all claims, check expiration time, and inspect token structure — without needing a secret key.
Paste a JWT token above to decode it
Frequently Asked Questions
Is my JWT token secure?
All decoding happens in your browser with no server communication. Never paste production tokens into untrusted tools.
Can the tool verify the signature?
No. JWT signature verification requires the secret key or public certificate. This tool only decodes the payload — it does not validate authenticity.