DEVELOPER TOOLS

JWT decoder

Read the header and payload of a JSON Web Token.

Getting the tool ready...

Inputs are processed in your browser. This build does not send them to a server.

How it works

Read the header and payload of a JSON Web Token. Fill in the form and choose Decode token. It opens with an example already filled in, so you can see how it works first.

What you need

Token

What you get

Algorithm, Expires, Issued
Copy or save the result

Example

The tool opens with some example text.

That gives: Algorithm: HS256; Expires: 4 Oct 2026, 01:00 UTC; Issued: 4 Oct 2026, 00:00 UTC.

Good to know

The signature is not checked, so this does not prove the token is genuine or unexpired. Anyone holding a token can read it; decoding is not decryption. Avoid pasting live access tokens on a shared device.

Your privacy

What you type is worked out in your browser and is not sent anywhere. There are no accounts, adverts or tracking scripts.