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Your site vs. core-js average

Your site
72
core-js average
72
CategoryYour scorePeer avgDelta
Performance6871-3
Security6364-1
Accessibility6358+5
SEO9190+1
Infrastructure86860
Compliance8479+5
Content8683+3
Sustainability5668-12

Better than 37% of core-js sites

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Category: JavaScript libraries

core-js

Based on 1493 real audits

36
Avg. Performance
88
Avg. Accessibility
84
Avg. Best Practices
91
Avg. SEO
64
Avg. Security
72
Avg. Composite
36 /100
Avg. Performance
360 ms
Avg. TTFB
72 /100
Avg. Composite
1493
Sites Audited

How core-js sites compare

core-js sites tend to score below average on performance (36/100), compared to the global average of 46/100.

Recent Audits

See all 1430 websites using core-js →
SitePerformanceGradeAudited
uniqlo.com27C2026-04-27
goodschina.ru60C2026-04-26
linux.com30C2026-04-25
starnetwork.io55C2026-04-24
www.starnetwork.io48C2026-04-24
uned.es49C2026-04-23
dzwww.com48D2026-04-23
dergipark.org.tr51D2026-04-23
nbcmiami.com26C2026-04-23
ohsu.edu42C2026-04-23

Commonly Used With

Sites that use core-js also commonly use:

Open Graph Miscellaneous 1271Google Search Console Analytics 1178Google Tag Manager Tag managers 1129Google Analytics Analytics 884Microsoft Analytics 826jQuery JavaScript libraries 745HSTS Security 686Priority Hints Performance 656Facebook SDK Analytics 530Facebook Analytics 529

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

FAQ

What is the average Lighthouse performance score for core-js sites?
Based on 1493 real audits, core-js sites score an average of 36/100 on Lighthouse performance.
How does core-js compare on web security?
core-js sites score an average security grade of 64/100 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 360ms based on 1493 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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