Websites Using core-js

core-js is a JavaScript library. Site Stats Database detects it on the websites it tracks by analyzing each site's homepage, response headers, and DNS, and has currently found it on 255,936 websites.

Site Stats Database currently tracks 255,936 websites using core-js. That makes it the #2 most common js library out of 86 we detect in this category.

The most common are News, Repair, and Travel sites, and they are most common in United States and Spain. The breakdowns above show the full split across topics, markets, authority, and monetization, based on the 255,936 websites using core-js we track.

core-js is one of 86 javascript libraries Site Stats Database detects. Browse the JavaScript Libraries category page for the full list ranked by usage. Because these serve many different purposes, we do not pit them head-to-head.

They tend to have lower authority than the typical website: the median core-js site has an Ahrefs Domain Rating of 23, lower than the 28 median across all sites Site Stats Database tracks.

Over the last 2 months, the number we track grew 38% and their combined traffic rose 9.1%, based on Site Stats Database's month-by-month snapshots of this group.

Traffic estimates, organic keywords, and authority come from DataForSEO; Domain Rating comes from Ahrefs' public endpoint; and technology detection (including core-js) comes from Site Stats Database's own crawler, which inspects each site's HTML, headers, and infrastructure.

At least monthly. Traffic and rankings refresh every month, and technology detections are refreshed as sites are re-crawled, so this page always reflects the current 255,936 core-js websites.

Yes. The complete, filterable list of all 255,936 core-js websites, enriched with traffic history, authority, keywords, and the full tech stack, is available with a Site Stats Database plan.