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Your site vs. core-js average

Your site
77
core-js average
74
CategoryYour scorePeer avgDeltaPercentile
Performance8074+6—
Security7868+10—
Accessibility6463+1—
SEO9190+1—
Infrastructure8186-5—
Compliance6677-11—
Content6782-15—
Sustainability8070+10—

Better than 65% of core-js sites

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Category: JavaScript libraries

core-js

Based on 2070 real audits

38
Avg. Performance
87
Avg. Accessibility
86
Avg. Best Practices
90
Avg. SEO
68
Avg. Security
74
Avg. Composite
38 /100
Avg. Performance
490 ms
Avg. TTFB
74 /100
Avg. Composite
2070
Sites Audited

How core-js sites compare

core-js sites tend to score below average on performance (38/100), compared to the global average of 60/100.

Recent Audits

View adoption trends → See all 1818 websites using core-js →
SitePerformanceGradeAudited
www.mossandmolt.com54B2026-11-14
homesentryusa.com56B2026-11-14
www.mossandmolt.com51B2026-11-13
blacksonblondes.com13C2026-11-13
aipass.org55B2026-11-13
birsayt.az61B2026-11-13
www.thepassivepractice.com27C2026-11-13
www.mossandmolt.com47B2026-11-12
www.daraz.pk/#?47C2026-11-12
brudycosmetics.com47B2026-11-12

Commonly Used With

Sites that use core-js also commonly use:

Open Graph Miscellaneous 1781Google Tag Manager Tag managers 1480Google Search Console Analytics 1400Google Analytics Analytics 1196jQuery JavaScript libraries 1080Priority Hints Performance 1067HSTS Security 981Microsoft Analytics 972Cloudflare CDN 759Facebook SDK Analytics 715

Compare with...

core-js vs Open Graphcore-js vs Google Tag Managercore-js vs Google Search Consolecore-js vs Google Analyticscore-js vs jQuerycore-js vs Priority Hintscore-js vs HSTScore-js vs Microsoftcore-js vs Cloudflarecore-js vs Facebook SDK

FAQ

What is the average Lighthouse performance score for core-js sites?
Based on 2070 real audits, core-js sites score an average of 38/100 on Lighthouse performance.
How does core-js compare on web security?
core-js sites score an average security grade of 68/100 in BeaverCheck audits.
What is the average page load time for core-js websites?
The average Time to First Byte (TTFB) for core-js sites is 490ms based on 2070 audits.
How can I improve my core-js site's performance?
Run a free audit on BeaverCheck to get specific recommendations for your core-js site. Common issues include render-blocking resources, unoptimized images, and missing caching headers.

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