JWT Viewer & Decoder by LOTARION
Finds, displays, decodes, and copies JWT tokens on the current page.
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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.
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.
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.
More information
- Add-on Links
- Version
- 1.0.0
- Size
- 101.73 KB
- Last updated
- 4 days ago (Apr 18, 2026)
- Related Categories
- License
- All Rights Reserved
- Privacy Policy
- Read the privacy policy for this add-on
- Version History
- Add to collection