Step 1
Paste the token carefully
Use the complete bearer token and confirm it has the expected header, payload, and signature sections.
ToolsJWT Parser
web
Inspect JWTs safely and find claim-level issues quickly
Decode token headers and payloads, review claims, and debug expiration, audience, and clock skew problems without guesswork.
How to use it
3
Examples to try
3
Frequently asked questions
3
Related tools
5
jwt parserdecode jwtjwt expiration checkinspect bearer tokenjwt claims debug
How to use it
6JWT troubleshooting usually starts with one question: what is actually inside the token right now? This page puts the most common diagnostic paths into indexable content while leaving the parser interactive for real inputs.
How to use it
6JWT troubleshooting usually starts with one question: what is actually inside the token right now? This page puts the most common diagnostic paths into indexable content while leaving the parser interactive for real inputs.
Step 2
Review header and claims
Check alg, kid, exp, nbf, iss, aud, and any custom claims your application relies on.
Step 3
Compare token data to system behavior
Match the parsed timestamps and claims against the backend verifier, client clock, and environment config.
What teams use it for
- Debug a 401 caused by expired or future-dated tokens.
- Inspect custom claims for role-based authorization bugs.
- Compare the token a client sends against the one the backend expected.
Examples to try
6Check whether the exp claim is already in the past.
Examples to try
6Check whether the exp claim is already in the past.
Examples to try
- Check whether the exp claim is already in the past.
- Inspect a bearer token copied from a failed API request.
- Review custom organization or scope claims before changing auth rules.
Common pitfalls
- Assuming decode equals verify when the signature has not been checked.
- Ignoring timezone or clock skew when comparing exp and nbf values.
- Sharing full tokens in screenshots, logs, or support threads.
Frequently asked questions
3Can this tool verify the signature?
Frequently asked questions
3Can this tool verify the signature?
Can this tool verify the signature?
It is best used for inspection and debugging. Signature validation still depends on the correct key material and backend verification rules.
Why does a valid-looking token still fail?
Common causes include wrong audience, wrong issuer, clock skew, revoked keys, or a mismatch between signing algorithm and verifier settings.
Is it safe to paste a production JWT?
Avoid pasting sensitive live tokens unless you fully trust the environment and have removed confidential claims where possible.
Open the tool
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