JWT Decoder
Decode and inspect JSON Web Tokens online. View header, payload, and expiration. Free JWT debugger.
About JWT Decoder
Decode JSON Web Tokens to inspect the header and payload. JWTs are commonly used for authentication in APIs and web applications. This tool decodes the token locally — nothing is sent to any server.
Note: This tool only decodes JWTs — it does not verify signatures.
Tutorial
How to Decode JWT Online in 3 Steps
Decode and inspect JSON Web Tokens online in seconds. Learn what's inside a JWT — header, payload, and signature — with real examples.