Developer core · local browser processing

JWT Decoder

Decode JWT header and payload locally without verifying or uploading the token.

Use the tool

Ready.

Output

How it works

This tool runs in your browser with JavaScript. Paste input, run the tool, then copy or download the result. It is designed for quick debugging and data cleanup.

Privacy

Your input is processed locally. Pawstool does not need to upload API payloads, tokens, JSON, URLs, or generated values.

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FAQ

Can I use this for production data?

Use it for inspection and formatting. Always verify sensitive or security-critical data in your own environment.