JWT signature verifier
Check HS256, HS384, HS512, or an RSA public key you paste.
Processed in this browser. Nothing is sent to a server.
Result
How do I use JWT signature verifier?
Write secret: key and the token on the following line, or paste the public PEM in the body. Tokens with alg none are rejected.
What are the limits of JWT signature verifier?
The key does not leave the browser. The tool does not sign a new token.
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