JWT Decoder
Inspect JWT tokens in the browser by decoding the header and payload, reviewing claims, and checking common timestamps.
Use JWT Decoder
Details, guidance, and common questions
The working tool stays first. Open these sections only when you need more context.
JWT inspection is easier when decoding is quick and readable
JWTs are common in authentication flows, API testing, and debugging sessions where you need to inspect claims, timestamps, or metadata without editing code.
This decoder keeps the process lightweight by showing the header, payload, and simple claim summaries while making it clear that decoding is not signature verification.
Helpful tips for a better result
- Use the timestamp converter to inspect exp, iat, or nbf claim values in more detail.
- Remember that decoding a token does not verify that it is trusted.
- Paste the full token with all three sections for the cleanest result.
Frequently asked questions
Does this verify the JWT signature?
No. This page decodes the readable sections of the token but does not verify the signature or trustworthiness.
What parts of the token can I inspect?
You can inspect the header and payload sections, along with common claims like expiry and issued-at timestamps.
Does the token leave my browser?
No. The decoding happens locally in your browser for normal use.