Service Worker Detector

Service Worker Detector

This extension detects if a website registers a Service Worker.

Service Worker Detector promo image
What is Service Worker Detector?

Service Worker Detector is an Edge add-on that detects if a website registers a Service Worker. It proactively identifies Service Workers and allows web developers to analyze their code and learn from them.

Stats
Users: 358 ▼ -9
Version: 2.4.0 (Last updated: 2020-11-03)
Creation date: 2020-11-03
Risk impact: Low risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
Permissions:
  • activeTab
Size: 198.81K
URLs: Website
Stats date:

Other platforms

Service Worker Detector
Service Worker Detector (v2.4.1)
3.67 (6) 1,554
Not available on Firefox
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Summary

👷 This extension detects if a website registers a Service Worker [1] by reading the navigator.serviceWorker.controller property [2]. It also parses the Web App Manifest and displays the information in an accessible way. Find the source code of the extension on GitHub [3].

🤔 Why would you want this? If you aren’t into Web development, most probably you wouldn’t. However, if you are into Web development, the extension helps you identify (unexpected) Service Worker registrations in the wild and lets you analyze their code and learn from them.

💡 Why would you use this extension and not just the amazing Chrome Developer Tools? The answer is that the extension proactively detects Service Workers before you even have to open the Developer Tools (which you probably eventually will end up doing anyway).

-- [1] https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorker [2] https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerContainer/controller [3] https://github.com/google/service-worker-detector

Safety
Risk impact

Service Worker Detector is relatively safe to use as it requires very minimum permissions.

Risk likelihood

Service Worker Detector has earned a fairly good reputation and likely can be trusted.

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Screenshots