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JavaScript libraries

core-js usage 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.ukAkamai Bot ManagerAkamaiASP.NETGoogle Tag ManagerjQueryMUIAkamai
10,024pinayflix.ukCloudflareCloudflare Bot ManagementFont AwesomeGoogle FontsGutenberg blocksjQueryCloudflare
10,265gamcare.org.ukAddToAnyBootstrapCloudflareCloudflare Bot ManagementEnvoyGoogle Tag ManagerCloudflare
11,129bris.ac.ukApache HTTP ServerGoogle Tag ManagerTermlyJanet Jisc Services Limited
11,950bristol.ac.ukApache HTTP ServerGoogle Tag ManagerTermlyJanet Jisc Services Limited
12,104flashscore.co.ukGoogle AdSenseGoogle Tag ManagernginxOneTrustIAB TCF v2 APIArtcompany
14,581blog.gov.ukAmazon CloudFrontCivic Cookie ControlGoogle Tag ManagerGutenberg blocksjQueryjQuery MigrateAmazon Web Services
17,503screamingfrog.co.ukAdobe FontsCloudflareCloudflare Web AnalyticsGoogle Tag ManagerGutenberg blocksjQueryCloudflare
18,378dpdgroup.co.ukBootstrapCloudflareCloudflare Bot ManagementconsentmanagerFont AwesomeGoogle Tag ManagerAkamai
19,052nominet.ukCloudflareCloudflare Bot ManagementCookieYesGSAPGoogle Tag ManagerGutenberg blocksCloudflare
23,712scot.nhs.ukMicrosoft ClarityCookieYesGoogle FontsGutenberg blocksjQueryjQuery MigrateMicrosoft Azure
27,842ntu.ac.ukAddThisAdobe FontscdnjsCloudflareCloudflare Bot ManagementGoogle MapsSquiz As Ap Squiz Pty Ltd
28,817gre.ac.ukcdnjsGoogle MapsGoogle FontsGoogle Tag ManagerjQuery 4.0.0jQuery UIJanet Jisc Services Limited
33,892energysavingtrust.org.ukcdnjsCloudflareCloudflare Bot ManagementCloudflare Web AnalyticsCivic Cookie ControlCookiebot (Usercentrics)Cloudflare
34,426sanger.ac.ukGoogle Ads (conversion)Google FontsGoogle Tag ManagerGutenberg blocksjQuery 3.7.1LinkedIn Insight TagJanet Jisc Services Limited
36,573fast.net.ukGutenberg blocksjQueryLiteSpeedWordPressYoast SEOFastnetuk
38,596whiterose.ac.ukAdobe Experience ManagerCookieYesGoogle Analytics 4Google FontsGutenberg blocksjQueryUK2
39,217bgs.ac.ukAdobe FontsBootstrapCivic Cookie ControlFont AwesomeGoogle FontsGoogle Tag ManagerJanet Jisc Services Limited
42,144ukdefencejournal.org.ukGoogle AdSenseCloudflareCloudflare Web AnalyticsDisqusGoogle Tag ManagerjQueryCloudflare
42,307labour.org.ukBootstrapCloudflareCloudflare Bot ManagementGoogle Tag ManagerGutenberg blocksjQueryCloudflare
43,310ulcc.ac.ukBootstrapCloudflareCloudflare Bot ManagementCookieYesGoogle Analytics 4Gutenberg blocksMicrosoft Azure
43,635zdnet.co.ukGoogle Marketing Platform (DV360/CM360)Google Publisher Tag (Ad Manager)Google Tag ManagerGutenberg blocksJetpackNew RelicAmazon Web Services
44,075tandf.co.ukBootstrapCloudflareCloudflare Bot ManagementCloudflare Web AnalyticsGoogle Tag ManagerGutenberg blocksCloudflare
45,150prat.ukCloudflareCloudflare Bot ManagementFont AwesomeGoogle MapsGutenberg blocksjQueryCloudflare
46,921networkrail.co.ukCloudflareCloudflare Bot ManagementGoogle Tag ManagerGutenberg blocksjQueryjQuery MigrateCloudflare

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

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