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JWT Decoder
Decode and inspect JSON Web Tokens without verification
Encoders & Decoders Runs in your browser
How to Use
1Paste your JWT token in the input field
2The decoded header and payload appear automatically
3Check expiration time and other claims
4Click Copy on any section to copy the formatted JSON
Frequently Asked Questions
What is a JWT?
A JSON Web Token (JWT) is a compact, URL-safe way to represent claims between two parties. It consists of three Base64URL-encoded parts: header, payload, and signature.
Does this tool verify the JWT signature?
No, this tool only decodes the JWT to show its contents. It does not verify the cryptographic signature. Never trust a JWT without server-side verification.
Is my token safe?
Yes, all decoding happens in your browser. No data is sent to any server. However, be cautious about sharing decoded token contents.