JWT Debugger

Encoded Token
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Header (Algorithm & Token Type)
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Payload (Claims / Data)
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Local Processing
Powered by:
jose/jwt-decode/crypto-js/Monaco Editor
Client-Side Only

About JWT Debugger

Secure and local decoding and encoding of JSON Web Tokens (JWT). Zply provides this tool to help developers work faster and more securely. Like all our tools, it runs entirely in your browser. Your data never leaves your computer.

How to use

  • 01.Input your data into the editor or interactive workspace above.
  • 02.Use the toolbar to perform actions, format, or transform your data.
  • 03.Your results are updated in real-time. Copy or share them via the URI.

Privacy First

This jwt debuggeris client-side only. We don't use cookies, trackers, or any backend storage. The "Share" feature uses URI persistence, meaning your state is encoded in the URL hash, not stored in a database.