Populardev
JWT Decoder
Decode JWT tokens to view the header, payload, and signature. Perfect for debugging and inspecting tokens. Does NOT verify signatures.
Frequently Asked Questions
Does this verify JWT signatures?
No. This tool only DECODES the token for inspection. It does NOT verify the signature. Do not use for security purposes.
What parts of a JWT are shown?
The header (algorithm), payload (claims), and signature (Base64 encoded).
Is my JWT stored?
No. All decoding happens locally in your browser. Your token is never transmitted.