JWT Decoder
Read the contents of a JSON Web Token.
How to use JWT Decoder
- Add your content Type or paste into the box. Nothing is uploaded — this runs in your browser.
- Set the options Adjust the settings to suit what you need.
- See the result The result updates instantly as you change things.
- Copy or download Copy the result to your clipboard, or download it as a file.
Decoding is not verification. A JWT payload is only Base64 — anyone can read it. Only a signature check proves it is genuine, and that needs the secret, which stays on your server.
This tool runs entirely in your browser. Nothing you enter is uploaded, stored or seen by us.
Decode a JWT and read its header, payload and expiry. This runs entirely in your browser, which for a token is not a nicety — pasting a live access token into a server-side tool hands it to whoever runs that server.