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Security utility
JWT Decoder
Inspect token headers and payloads locally. Private by default, with all processing done in your browser.
Input
Result
Your result will appear here.Ready — everything stays in this browser.
How to use this tool
A quick jwt decoder workflow
Inspect token headers and payloads locally. Paste or enter your data, use the available controls, then copy or download the result when it is ready.
- Everything runs in your browser, so your working data stays on your device.
- No account, installation, or upload is needed.
- Use the related utilities below when you need the next step in your workflow.