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Blocks an AI crawler 12%Blocks GPTBot 11%ads.txt 22%Cookie consent banner 20%Ad pixels 23%llms.txt 15%HTTPS homepage 99%DMARC record 65%Blocks an AI crawler 12%Blocks GPTBot 11%ads.txt 22%Cookie consent banner 20%Ad pixels 23%llms.txt 15%HTTPS homepage 99%DMARC record 65%
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JavaScript libraries

core-js usage worldwide

core-js runs on 11% of websites worldwide in our sample (7,439 of 68,167). Market share by country, top sites using it and technologies it is paired with.

11%
Share in Global
7,439 / 68,167
32
sites in Tranco top 1K
491 in top 10K
#58,236
median Tranco rank
Tranco
16
frequent companions
WordPress

By market

  1. Global11%7,439
  2. United Kingdom17%1,897
  3. Netherlands15%1,263
  4. Italy23%1,686
  5. Spain19%789
  6. Japan11%1,376
  7. Latin America22%4,325

Trend

Often used with

  1. WordPressCMS96%×5.4
  2. jQueryJavaScript libraries95%×2.8
  3. jQuery MigrateJavaScript libraries72%×7.5
  4. Gutenberg blocksWebsite builders58%×6.7
  5. Yoast SEOCMS57%×6.4
  6. CloudflareCDN52%
  7. Google Tag ManagerTag managers48%
  8. Google FontsWeb fonts47%×1.8
  9. Font AwesomeWeb fonts40%×2.6
  10. Google Analytics 4Analytics32%×1.7

Top sites using core-js All 7,439 sites

TrancoSiteAlso usesHosting
73skype.comAzure Front Door / CDNwebpackMicrosoft Azure
224criteo.comBootstrapcdnjsCookiebot (Usercentrics)Font AwesomeGSAPGoogle Tag ManagerFastly
259cpanel.netAddToAnyCloudflareCloudflare Bot ManagementFont AwesomeGoogle Tag ManagerjQueryCpanel Inc Cpanel Llc.
273wixsite.comGoogle Cloud CDN / GFEWixCloudflare
304onelink.meBootstrapCloudflareCloudflare Bot ManagementGoogle Tag ManagerGutenberg blocksjQueryAmazon Web Services
328vungle.comBootstrapCloudflareCloudflare Bot ManagementComplianzGoogle Ads (conversion)Google Tag ManagerCloudflare
333harvard.eduGoogle Tag ManagerJetpackjQuerynginxParse.lyWordPressAutomattic (WordPress.com)
334rubiconproject.comCloudflareCloudflare Bot ManagementGoogle Tag ManagerGutenberg blocksjQueryMagnite (Rubicon)Amazon Web Services
365checkpoint.comAddToAnyBootstrapAmazon CloudFrontDriftFont AwesomeGSAPAmazon Web Services
417plesk.comCloudflareGoogle Tag ManagerHotjarJetpackjQueryLiteSpeedCloudflare
447visualstudio.comAngularJSMicrosoft ClarityjQueryNew RelicnginxReactMicrosoft Azure
463appsflyer.comBootstrapCloudflareCloudflare Bot ManagementGoogle Tag ManagerGutenberg blocksjQueryAmazon Web Services
528docker.comAdobe Experience Platform TagsGoogle FontsGoogle Tag ManagerNew RelicnginxOneTrustFastly
581dailymail.comAkamai Bot ManagerAkamaiAmazon Publisher ServicesComscoreGoogle Marketing Platform (DV360/CM360)ReactAkamai
592wix.comGoogle Cloud CDN / GFEWixWix
608adriver.ruBootstrapFont AwesomeGoogle FontsGutenberg blocksjQueryjQuery MigrateAdriver Llc Adriver
639berkeley.eduCloudflareCloudflare Bot ManagementGoogle FontsGoogle Tag ManagerGutenberg blocksjQueryCloudflare
666tencent.comBootstrapGutenberg blocksjQueryjQuery MigratenginxWordPressTencent Cloud
733dailymail.co.ukAkamaiAmazon Publisher ServicesComscoreGoogle Marketing Platform (DV360/CM360)Google FontsReactAkamai
755cnet.comGoogle Marketing Platform (DV360/CM360)Google Publisher Tag (Ad Manager)Google Tag ManagerGutenberg blocksJetpacknginxCloudflare
777wpguardian.comAmplitudeCloudflareCloudflare Web AnalyticsFont AwesomeGoogle Tag ManagerhCaptchaCloudflare
784viber.comAkamaiBootstrapFont AwesomeGoogle FontsGoogle Tag ManagerGutenberg blocksAmazon Web Services
787wpguardian.ioAmplitudeCloudflareCloudflare Web AnalyticsFont AwesomeGoogle Tag ManagerhCaptchaCloudflare
908smilewanted.comBootstrapCloudflareCookieYesGoogle Analytics 4Google FontsGutenberg blocksCloudflare
918liftoff.ioBootstrapCloudflareComplianzGoogle Ads (conversion)Google Tag ManagerGutenberg blocksCloudflare

Our crawler: 68,167 sites · Global · updated Nov 13, 2026 · Methodology

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