JWT Decoder & Inspector - Decode JWT Tokens Online
Decode JWT tokens online and inspect header, payload, exp, iat, nbf, aud, iss, and signature segments locally in your browser. Private JWT inspector for auth debugging.
Decode only, no signature verification
This JWT inspector decodes the token locally so you can examine claims safely. It does not verify whether the signature is authentic, valid, or trusted.
JWT Token
Supports raw JWT strings and tokens copied with a Bearer prefix.
Runs entirely in your browser. This tool decodes tokens for inspection only and does not verify signatures.
Algorithm
Not available
Status
Waiting for token
Signature
Waiting for token
Ready to inspect
Paste a JWT to inspect the decoded header, payload, signature segment, and RFC 7519 time claims in one place.
How to Decode and Inspect a JWT Online
Paste your JWT into the input area. Tokens with a Bearer prefix are cleaned automatically.
Review the decoded header and payload JSON, then inspect the RFC 7519 claim summary for issuer, audience, timing, and scope.
Copy the decoded JSON or signature segment when you need to debug integrations, auth flows, or API requests.
Key Features
Real-time local decoding
Decode JWT header and payload segments instantly without refreshing the page or relying on a backend service.
Built-in RFC 7519 claim inspection
Review RFC 7519 claims such as exp, iat, nbf, iss, sub, aud, and jti alongside token type and algorithm for faster debugging.
Built for auth debugging
Copy the raw token, decoded JSON, or signature segment while investigating auth issues across APIs, SPAs, and mobile clients.
JWT Decoder FAQ
Does this JWT decoder verify signatures?
This page decodes the JWT structure and shows the header, payload, and signature segment. It does not prove that the signature is valid or trusted.
Is this JWT inspector private?
Yes. Decoding happens entirely in your browser, so the token is not uploaded to our servers.
Which JWT claims can I inspect?
You can inspect RFC 7519 registered claims such as iss, sub, aud, exp, nbf, iat, and jti, along with JOSE header fields like alg, typ, and kid plus any custom payload claims.