INSPECT & ANALYZE / LOCAL TOOL
JWT Decoder
Inspect headers and payloads — locally.
HOW IT WORKS
Readable claims, unverified trust
JWT header and payload segments are base64url-decoded into JSON and common expiry fields are interpreted.
Limits to keep in mind
This page does not verify the signature, issuer, audience or allowed algorithm.
A PRACTICAL WORKFLOW
Use the result carefully.
01Paste a three-part JWT to inspect its readable header or payload. Decoding does not verify a signature.
02Run the utility and inspect the complete output.
03Use decoded data only for inspection; verify tokens in a trusted application backend.
COMMON QUESTION
Can anyone read a JWT payload?
Usually yes. Signed JWTs protect integrity, not secrecy.