What is Service Worker Detector?

Service Worker Detector is a Chrome extension developed by https://blog.tomayac.com, and its main feature is "This extension detects if a website registers a Service Worker.".

Extension Screenshots

Download Service Worker Detector Extension CRX File

Download Service Worker Detector extension files in crx format, manually install Chrome extensions in the browser, or share the crx files with friends to easily install Chrome extensions.

Extension Usage Instructions

👷 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).

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[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

Extension Basic Information

Name	Service Worker Detector
ID	ofdigdofloanabjcaijfidkogmejlmjc
Official URL	https://chromewebstore.google.com/detail/service-worker-detector/ofdigdofloanabjcaijfidkogmejlmjc
Description	This extension detects if a website registers a Service Worker.
File Size	432 KB
Installation Count	1,554
Current Version	2.4.1
Last Updated	2023-10-04
Publish Date	2020-06-14
Rating	3.67/5 Total 6 Ratings
Developer	https://blog.tomayac.com
Email	[email protected]
Payment Type	free
Extension Website	https://github.com/google/service-worker-detector
Help Page URL	https://github.com/google/service-worker-detector/issues
Privacy Policy Page URL	https://raw.githubusercontent.com/tomayac/blogccasion/master/privacy-policy.txt
Supported Languages	en
manifest.json
{ "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx", "manifest_version": 2, "name": "Service Worker Detector", "short_name": "SW Detector", "description": "This extension detects if a website registers a Service Worker.", "author": "Thomas Steiner ([email protected], @tomayac)", "version": "2.4.1", "icons": { "16": "assets\/icon-female-16.png", "48": "assets\/icon-female.png", "128": "assets\/icon-female-128.png", "160": "assets\/icon-female.png", "512": "assets\/icon-female-512.png", "1024": "assets\/icon-female-1024.png" }, "page_action": { "default_icon": { "19": "assets\/icon.png", "38": "assets\/icon.png", "40": "assets\/icon.png", "160": "assets\/icon.png" }, "default_popup": "popup.html", "default_title": "\u274c\ud83d\udc77\u200d No active Service Worker found." }, "permissions": [ "activeTab" ], "content_scripts": [ { "matches": [ "" ], "js": [ "contentscript.js" ], "run_at": "document_idle", "all_frames": false } ], "background": { "scripts": [ "background.js" ], "persistent": false }, "minimum_chrome_version": "40" }