WebToolArcJWT Tools
Free browser-based jwt tools with instant results and no account required.
JWT Decoder
Decode JWT header and payload JSON locally with claim-time status, while clearly separating decoding from signature verification.
JWT ToolsJWT Header Decoder
Decode and pretty-print the protected header of a compact JWT locally.
JWT ToolsJWT Payload Decoder
Decode and pretty-print the JSON claim payload of a compact JWT locally.
JWT ToolsJWT Claims Inspector
Inspect registered JWT claims such as iss, sub, aud, exp, nbf, iat, and jti.
JWT ToolsJWT Expiration Checker
Check exp, nbf, and iat NumericDate claims against the current browser time.
JWT ToolsJWT HS256 Generator
Create an HMAC-SHA-256 signed JWT locally from JSON header and payload objects.
JWT ToolsJWT HS256 Verifier
Verify an HS256 JWT signature locally with an explicit shared secret.
JWT ToolsJWT Claim Time Converter
Convert JWT NumericDate seconds to ISO/UTC time and ISO timestamps back to NumericDate seconds.
JWT ToolsJWT Base64URL Parts Inspector
Inspect the three Base64URL segments of a compact signed JWT/JWS.
JWT ToolsJWK Inspector
Inspect a JSON Web Key locally and check the required members for common key types.
JWT ToolsJWK Thumbprint Calculator
Calculate an RFC 7638 SHA-256 JWK thumbprint locally.