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Your site vs. core-js average

Your site
72
core-js average
73
CategoryYour scorePeer avgDeltaPercentile
Performance7473+1—
Security6166-5—
Accessibility5960-1—
SEO8290-8—
Infrastructure8986+3—
Compliance7977+2—
Content8182-1—
Sustainability7269+3—

Better than 32% of core-js sites

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Category: JavaScript libraries

core-js

Based on 1726 real audits

37
Avg. Performance
88
Avg. Accessibility
84
Avg. Best Practices
91
Avg. SEO
66
Avg. Security
73
Avg. Composite
37 /100
Avg. Performance
421 ms
Avg. TTFB
73 /100
Avg. Composite
1726
Sites Audited

How core-js sites compare

core-js sites tend to score below average on performance (37/100), compared to the global average of 70/100.

Recent Audits

View adoption trends → See all 1595 websites using core-js →
SitePerformanceGradeAudited
www.rescueairtx.com73B2026-09-11
www.anaconfort.ro30C2026-09-10
lylaslegacy.org59B2026-09-10
www.eapollowholesale.co.uk63B2026-09-09
www.masoncircle.com39C2026-09-09
sevano.com36B2026-09-09
www.urimat.com/de/47C2026-09-09
www.valera.com45C2026-09-09
evaprints.ro95B2026-09-09
carteaservice.ro60C2026-09-09

Commonly Used With

Sites that use core-js also commonly use:

Open Graph Miscellaneous 1463Google Search Console Analytics 1280Google Tag Manager Tag managers 1266Google Analytics Analytics 1001Microsoft Analytics 887jQuery JavaScript libraries 869HSTS Security 811Priority Hints Performance 794Facebook SDK Analytics 597Facebook Pixel Analytics 584

Compare with...

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

FAQ

What is the average Lighthouse performance score for core-js sites?
Based on 1726 real audits, core-js sites score an average of 37/100 on Lighthouse performance.
How does core-js compare on web security?
core-js sites score an average security grade of 66/100 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 421ms based on 1726 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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