This extension detects if a website registers a Service Worker by reading the navigator.serviceWorker.controller property. It also parses the Web App Manifest.

Service Worker Detector - Firefox Add-on
Service Worker Detector is a Firefox add-on that detects if a website registers a Service Worker by reading the navigator.serviceWorker.controller property. It also parses the Web App Manifest.
Add-on stats
Manifest V2
Weekly download count: 1
Firefox on Android: Yes
Permissions:
- activeTab
Size: 206.47K
Email: st*****@gmail.com
URLs: Website
Ranking
Other platforms
Not available on Android
Not available on Edge
User reviews
by 远离中共邪教快退出党团队, 2025-03-01
by Björn 'Idrinth' Büttner, 2023-03-06
Add-on safety
Risk impact
Service Worker Detector requires a few sensitive permissions. Exercise caution before installing.
Risk impact analysis details
- Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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- Low ******* ****** ** *** ********* ********
Risk likelihood
We don't have sufficient data to confidently determine the risk likelihood of Service Worker Detector. Use it at your own risk.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
- Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
- Good **** ********* *** **** **** *******
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