Service Worker Detector

This extension detects if a website registers a Service Worker.
What is Service Worker Detector?
Service Worker Detector is a Chrome extension designed for web development exploration. It identifies and analyzes Service Worker registrations in websites, providing information about the Web App Manifest in an accessible way. While Chrome Developer Tools offer similar insights, this extension proactively detects Service Workers, saving users time and effort.

Extension stats

Users: 1,000+
Rating: 3.40 (5)
Version: 2.4.1 (Last updated: 2023-10-04)
Creation date: 2020-06-14
Risk impact: Low risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
Permissions:
  • activeTab
Size: 442.37K

Other platforms

Service Worker Detector (v2.4.0)
4.86 (7) 149
Service Worker Detector (v2.4.0)
0.00 (0) 326
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Extension 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

User reviews

Doesn't work as expected
by Eduard Gorte, 2023-12-27

Doesn't work (lazy dumb on icon still sleeping when workers are loads and works) on latest Cent (Chromium 86.0.4240.198)
by Vitaliy Romanyuk, 2022-04-29

easy access to service workers
by Marco Pöhler, 2017-02-28
View all user reviews

Extension safety

Risk impact

Service Worker Detector requires very minimum permissions.

Risk likelihood

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

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