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JWT Decoder

Free JWT decoder. Paste a JWT token to decode its header and payload instantly. Your token never leaves your browser.

Inspect any JWT — view the decoded header and payload to debug authentication issues.

Your token is decoded entirely in your browser and never sent anywhere.

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Features

  • 100% free to use
  • No signup or account required
  • Works directly in your browser
  • Private and secure processing

How to Use

  1. 1Paste your JWT token
  2. 2See the decoded header and payload
  3. 3Copy any part you need

JWT Decoder – Frequently Asked Questions

Can it verify signatures?

It decodes and validates structure; signature verification depends on the secret.

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