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JWT Validator

Decode JWT tokens, validate time-based claims, and verify HS256 signatures.

How it works

1. Decode

JWT tokens are split into 3 parts (header.payload.signature) and base64url decoded.

2. Validate Claims

Time-based claims (exp, iat, nbf) are checked against the current time.

3. Verify (Optional)

If you provide a secret key, HS256 signatures can be verified locally.