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JWT Signer / Verifier

Sign and verify JSON Web Tokens (JWT) online. Test authentication flows with custom payloads and cryptographic secrets.

jwtsignverify

JWT header

Provide a JSON object. alg and typ are normalized during signing.

JWT payload

Payload claims are signed with the selected HMAC algorithm.

JWT token

Paste any JWT here to decode and verify it with the current secret.

Signature
Valid
Signature matches the provided secret.
Algorithm
HS256
Only HMAC JWTs are supported for signing and verification.
Expiration
Present
2030-01-01T00:00:00.000Z
Encoded signature

sdjhYg5X-Nd6zk0JxWvW08e6XLRHF17Ln7CsddJ64pU

Expected signature

sdjhYg5X-Nd6zk0JxWvW08e6XLRHF17Ln7CsddJ64pU

Decoded JWT

Decoded header and payload from the current token.

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