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JWT Decoder

Decode and inspect JSON Web Tokens (JWT) locally in your browser. View the header, payload, and signature securely without sending tokens to a server.

Processing happens completely locally in your browser. Tokens are never sent to a server.

Security Note: This tool only decodes the contents of the JWT. It does not verify the signature or validate the token's authenticity. Decoding a JWT locally does not prove that its contents are trustworthy.

Decoded JWT

Decoded sections will appear here.