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Preview of JWT Viewer & Decoder

JWT Viewer & Decoder by LOTARION

Finds, displays, decodes, and copies JWT tokens on the current page.

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Extension Metadata

Screenshots
View key JWT payload fields at a glanceExpand the full decoded JWT payloadInspect JWT tokens and optionally support future add-on improvementsClear status when no JWT token is available
About this extension
JWT Viewer & Decoder helps developers inspect JWT tokens available on the current website. It can detect JWTs from cookies, localStorage, and sessionStorage, display the raw token, decode the payload locally in the browser, and let you copy the token with one click.

Features:
- Detects JWT tokens on the active tab
- Reads token-like values from cookies, localStorage, and sessionStorage
- Decodes JWT payload locally
- Shows common claims such as sub, email, department or role, exp, and iat
- Highlights token expiration status
- Lets you copy the token quickly
- Includes a compact support section with donation link and QR

Privacy:
JWT Viewer & Decoder does not send token data to external servers. Token inspection and decoding happen locally inside the browser popup.
Developer comments
JWT Viewer & Decoder detects JWT tokens on the active page and decodes them locally in the browser.
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Permissions and data

Optional permissions:

  • Access your data for all websites

Data collection:

  • The developer says this extension doesn't require data collection.
Learn more
More information
Add-on Links
  • Homepage
  • Support site
  • Support Email
Version
1.0.0
Size
101.73 KB
Last updated
4 days ago (Apr 18, 2026)
Related Categories
  • Search Tools
License
All Rights Reserved
Privacy Policy
Read the privacy policy for this add-on
Version History
  • See all versions
Tags
  • search
  • security
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