How to use JWT Decoder
- Open JWT Decoder and paste your input.
- Choose format, encode, or validate options as needed.
- Copy or download the output. Nothing is required to leave this tab for local transforms.
Developer Tools
JWT Decoder
Decode JWT header and payload without verifying signatures. Runs locally in your browser.
Ready — processing stays in your browser.
About JWT Decoder
Decode JWT header and payload without verifying signatures. Paste or type input, then copy the result from this browser tab.
What to expect
- Text transforms and checks run in the browser
- Useful for debugging payloads, hashes, and encodings
- No account required for everyday use