Decode, sign, and verify JSON Web Tokens The interface is designed to keep the important input, options, and result close together so you can finish a small development task without leaving your browser.

Comment utiliser cet outil développeur

Open JWT Decoder, Generator & Verifier on any modern browser.
Enter or upload the data you want to process and choose the relevant options.
Review the result, then copy or download it when it looks correct.

Confidentialité et traitement des données

This tool is designed for local browser processing. Avoid entering secrets or production credentials unless the page explicitly explains why network access is required.

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Questions fréquentes

Is JWT Decoder, Generator & Verifier free to use?

Yes. The tool is available in the browser without an account, subject to the site's general usage policies.

Is my input uploaded?

Most browser-based tools process input locally. Check the notice on the tool surface before using sensitive data.

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JWT 可以在没有密钥时解码，但解码不代表签名可信。密钥仅在本地内存中使用。