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JWT Decoder

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Overview

Decode a JWT's header and payload instantly, right from the browser toolbar or a right-click menu.

JWT Decoder shows you a JWT's header and payload the moment you need them — paste a token into the toolbar popup, or select one on any page and right-click "Decode as JWT". It shows: - The decoded header and payload, pretty-printed - Human-readable timestamps for exp/iat/nbf - Whether the token is expired Everything happens locally in the popup — the token is never sent anywhere, and no signature verification is attempted (that would need the signing key, which this extension never has). This is a free, independent hobby project.

Details

  • Version
    0.1.1
  • Updated
    August 8, 2026
  • Offered by
    mrkanber
  • Size
    9.38KiB
  • Languages
    English
  • Developer
    Email
    mrkanber@gmail.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Manage extensions and learn how they're being used in your organization
The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes
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