JWT Decoder
Decode a JSON Web Token to inspect its header and payload claims locally.
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How to use JWT Decoder
- Add your input. Paste or type your content into the input area.
- Pick any options. Choose the settings you need for JWT Decoder, or keep the defaults.
- Copy the result. Copy or download the output. Everything happens in your browser.
Why use JWT Decoder?
- Private by design: runs in your browser, nothing is uploaded
- Free with no sign-up and no watermark
- Fast, with no upload or download wait
- Works on phone, tablet and desktop
Common uses for JWT Decoder
- Check token expiry and claims while debugging.
- Inspect the algorithm used in a token.
- Understand what an API returns.
Private by design
JWT Decoder runs entirely in your browser. Whatever you type or paste is processed on your device and is never sent to our servers. Read our Privacy Policy for details.
Frequently asked questions
Does it verify the signature?
No. It only decodes the readable parts. Tokens never leave your browser, but signatures must be verified on your server.
Is JWT Decoder free to use?
Yes. JWT Decoder is free, needs no account and never adds a watermark to your result.
Is my input sent to a server when I use JWT Decoder?
No. JWT Decoder runs in your browser and nothing you enter is sent to our servers.
Does JWT Decoder work on my phone?
Yes. JWT Decoder is fully responsive and works in the browser on Android, iPhone, tablets and desktop computers.
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