SECURITY / JWT INSPECTOR

JWT inspector

Decode a token's headers and claims without sending it anywhere.

Up to 64 KB. Three-part compact JWTs only; a Bearer prefix is accepted. Encrypted JWE tokens and unencoded JWS payloads are unsupported. Deeply nested JSON is rejected.UTF-8, up to 64 KB. Treat tokens as secrets.
Paste a token or import a UTF-8 token file.
Tokens and claims stay in browser memory. They are not uploaded, logged, or saved automatically.