JWT Decoder
Decode JWT header and payload segments without verification.
Security
OpenFree JWT decoder and security tools
Inspect tokens and hashes without sending sensitive data to a server. These tools run locally in your browser.
Token inspection for debugging
JWT tools are useful when you need to inspect a token header or payload while debugging authentication, API sessions, or claims.
Wraplet's JWT decoder is for inspection only. It does not verify signatures or prove that a token should be trusted.
Security cautions
Never paste production secrets, private keys, refresh tokens, or active user credentials into tools unless you fully understand the data handling model.
Use hashes for checksums and comparison workflows, not as a replacement for secure password storage.
Frequently asked questions
Does the JWT decoder verify signatures?
No. It decodes readable token segments for debugging, but it does not verify whether a token is valid or trusted.
Should I paste production tokens?
Avoid pasting active production credentials into any online tool. Use test tokens or remove sensitive values first.