Your Privacy Matters

Everything runs entirely in your browser. The text, tokens and JWTs you enter are never uploaded, stored, or shared - nothing leaves your device. 100% private.

All Tools

Developer Tools

Base64, URL encode, UUID, JWT decoder, regex tester. Private & in-browser.

Base64 URL UUID JWT decode Regex

UUID v4

Header

Payload

Decodes only — signature is not verified (needs the secret/key).

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100% client-side · nothing uploaded · by Ajay Kakkar