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JavaScript libraries

core-js market share in the UK

core-js runs on 17% of UK websites in our sample (2,028 of 11,909). Market share by country, top sites using it and technologies it is paired with.

17%
Share in United Kingdom
2,028 / 11,909
0
sites in Tranco top 1K
1 in top 10K
#556,186
median Tranco rank
Tranco
42%
Among local business websites
8,782 / 21,114
16
frequent companions
jQuery

By market

  1. United Kingdom17%2,028
  2. Global11%7,426
  3. Netherlands17%1,427
  4. Italy23%1,699
  5. Spain18%817
  6. Japan11%1,300
  7. Latin America22%4,526

Trend

Often used with

  1. jQueryJavaScript libraries98%×2.3
  2. WordPressCMS97%×4.2
  3. jQuery MigrateJavaScript libraries76%×4.7
  4. Yoast SEOCMS60%×4.6
  5. Gutenberg blocksWebsite builders57%×4.7
  6. Google FontsWeb fonts56%×1.7
  7. CloudflareCDN47%
  8. Google Tag ManagerTag managers45%
  9. Font AwesomeWeb fonts43%×2
  10. BootstrapCSS frameworks35%

Top sites using core-js All 2,028 sites

TrancoSiteAlso usesHosting
3,963next.co.uk Akamai Bot ManagerAkamaiASP.NETGoogle Tag ManagerjQueryMUI Akamai
10,024pinayflix.uk CloudflareCloudflare Bot ManagementFont AwesomeGoogle FontsGutenberg blocksjQuery Cloudflare
10,265gamcare.org.uk AddToAnyBootstrapCloudflareCloudflare Bot ManagementEnvoyGoogle Tag Manager Cloudflare
11,129bris.ac.uk Apache HTTP ServerGoogle Tag ManagerTermly Janet Jisc Services Limited
11,950bristol.ac.uk Apache HTTP ServerGoogle Tag ManagerTermly Janet Jisc Services Limited
12,104flashscore.co.uk Google AdSenseGoogle Tag ManagernginxOneTrustIAB TCF v2 API Artcompany
14,581blog.gov.uk Amazon CloudFrontCivic Cookie ControlGoogle Tag ManagerGutenberg blocksjQueryjQuery Migrate Amazon Web Services
17,503screamingfrog.co.uk Adobe FontsCloudflareCloudflare Web AnalyticsGoogle Tag ManagerGutenberg blocksjQuery Cloudflare
18,378dpdgroup.co.uk BootstrapCloudflareCloudflare Bot ManagementconsentmanagerFont AwesomeGoogle Tag Manager Akamai
19,052nominet.uk CloudflareCloudflare Bot ManagementCookieYesGSAPGoogle Tag ManagerGutenberg blocks Cloudflare
23,712scot.nhs.uk Microsoft ClarityCookieYesGoogle FontsGutenberg blocksjQueryjQuery Migrate Microsoft Azure
27,842ntu.ac.uk AddThisAdobe FontscdnjsCloudflareCloudflare Bot ManagementGoogle Maps Squiz As Ap Squiz Pty Ltd
28,817gre.ac.uk cdnjsGoogle MapsGoogle FontsGoogle Tag ManagerjQuery 4.0.0jQuery UI Janet Jisc Services Limited
33,892energysavingtrust.org.uk cdnjsCloudflareCloudflare Bot ManagementCloudflare Web AnalyticsCivic Cookie ControlCookiebot (Usercentrics) Cloudflare
34,426sanger.ac.uk Google Ads (conversion)Google FontsGoogle Tag ManagerGutenberg blocksjQuery 3.7.1LinkedIn Insight Tag Janet Jisc Services Limited
36,573fast.net.uk Gutenberg blocksjQueryLiteSpeedWordPressYoast SEO Fastnetuk
38,596whiterose.ac.uk Adobe Experience ManagerCookieYesGoogle Analytics 4Google FontsGutenberg blocksjQuery UK2
39,217bgs.ac.uk Adobe FontsBootstrapCivic Cookie ControlFont AwesomeGoogle FontsGoogle Tag Manager Janet Jisc Services Limited
42,144ukdefencejournal.org.uk Google AdSenseCloudflareCloudflare Web AnalyticsDisqusGoogle Tag ManagerjQuery Cloudflare
42,307labour.org.uk BootstrapCloudflareCloudflare Bot ManagementGoogle Tag ManagerGutenberg blocksjQuery Cloudflare
43,310ulcc.ac.uk BootstrapCloudflareCloudflare Bot ManagementCookieYesGoogle Analytics 4Gutenberg blocks Microsoft Azure
43,635zdnet.co.uk Google Marketing Platform (DV360/CM360)Google Publisher Tag (Ad Manager)Google Tag ManagerGutenberg blocksJetpackNew Relic Amazon Web Services
44,075tandf.co.uk BootstrapCloudflareCloudflare Bot ManagementCloudflare Web AnalyticsGoogle Tag ManagerGutenberg blocks Cloudflare
45,150prat.uk CloudflareCloudflare Bot ManagementFont AwesomeGoogle MapsGutenberg blocksjQuery Cloudflare
46,921networkrail.co.uk CloudflareCloudflare Bot ManagementGoogle Tag ManagerGutenberg blocksjQueryjQuery Migrate Cloudflare

Our crawler: 11,909 sites · United Kingdom · updated 23 Oct 2026 · Methodology

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