A script that your browser runs in the background for caching, notifications and other experiences.
https://developers.google.com/web/fundamentals/primers/service-workers
JavaScript Libraries and Functions · Framework
Get access to data on 5,922,017 websites that are Service Worker Customers. We know of 4,457,364 live websites using Service Worker and an additional 1,464,653 sites that used Service Worker historically and 3,000,183 websites in the United States.
Get a list of 5,922,017 websites using Service Worker which includes location information, hosting data, contact details, 4,457,364 currently live websites and an additional 2,129,993 domains that redirect to sites in this list. 1,464,653 sites that used this technology previously and 3,000,183 websites in the United States currently using Service Worker.
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