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Your site vs. core-js average

Your site
77
core-js average
73
CategoryYour scorePeer avgDeltaPercentile
Performance8073+7—
Security7767+10—
Accessibility6561+4—
SEO9590+5—
Infrastructure7986-7—
Compliance6677-11—
Content6782-15—
Sustainability8069+11—

Better than 76% of core-js sites

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Category: JavaScript libraries

core-js

Based on 1779 real audits

37
Avg. Performance
88
Avg. Accessibility
85
Avg. Best Practices
91
Avg. SEO
67
Avg. Security
73
Avg. Composite
37 /100
Avg. Performance
430 ms
Avg. TTFB
73 /100
Avg. Composite
1779
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 67/100.

Recent Audits

View adoption trends → See all 1620 websites using core-js →
SitePerformanceGradeAudited
www.rheinmetall.ch55B2026-09-27
wired.com30C2026-09-27
unmineable.wordpress.com43B2026-09-27
pagellapolitica.it41B2026-09-26
ateliervalere.myshopify.com55B2026-09-25
sandrasliving.swiss/casa-base/55C2026-09-25
bigrocco.com9C2026-09-25
abayaest.com12B2026-09-25
www.daraz.com.bd/#?34C2026-09-25
iveco.com0C2026-09-24

Commonly Used With

Sites that use core-js also commonly use:

Open Graph Miscellaneous 1511Google Tag Manager Tag managers 1309Google Search Console Analytics 1292Google Analytics Analytics 1039jQuery JavaScript libraries 910Microsoft Analytics 890Priority Hints Performance 837HSTS Security 826Facebook SDK Analytics 609Facebook Pixel Analytics 596

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 Microsoftcore-js vs Priority Hintscore-js vs HSTScore-js vs Facebook SDKcore-js vs Facebook Pixel

FAQ

What is the average Lighthouse performance score for core-js sites?
Based on 1779 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 67/100 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 430ms based on 1779 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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