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🔑 JWT Debugger & Decoder
Inspect, decode, and troubleshoot JSON Web Tokens (JWT) locally inside your browser cache. Zero data leaves your computer.
Paste JWT Encoded String
Verify Signature Locally
Tokens using HS256 symmetric algorithms require a shared secret to authenticate hashes. Enter secret keys below to check hashes locally.
Decoded HEADER
No token loaded
Decoded PAYLOAD
No token loaded
SIGNATURE
No signature loaded