JWT Decoder

JWT Decoder is a free, browser-based tool from SmartTools. Read the header and payload of a token. Everything runs on your own device — your files and text never leave your phone or computer, nothing is uploaded to a server, and no account or login is needed. Open the page, use the tool, download or copy your result, and you are done.

1. Open the JWT Decoder workspace at the top of this page.
2. Add your input — pick a file, type or paste your text, or move the controls.
3. The result updates instantly in your browser as you work.
4. Download, copy or save the result. Nothing is stored after you close the tab.

Is JWT Decoder free to use?

Yes. JWT Decoder is completely free, needs no login and has no usage limits.

Are my files safe with JWT Decoder?

Yes. JWT Decoder runs inside your browser, so nothing is uploaded to a server or stored anywhere.

Does JWT Decoder work on mobile?

Yes. JWT Decoder works on Android and iPhone browsers as well as on desktop, with touch-friendly controls.

JWT Decoder works entirely inside your browser using client-side code. We do not upload, copy, store or share your files, text or results, and we keep no logs of what you process here. Because processing happens on your device, results depend on your browser and device capability, and the tool is provided as-is without warranty for critical, legal or financial use — please check important output yourself. Some tools that need live data (currency rates, translation, network checks) send only the minimum request needed to a public third-party service. Use SmartTools only with content you own or have permission to edit. Questions or takedown requests: bahaigamarbhola@gmail.com.

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