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Your site vs. core-js average

Your site
80
core-js average
72
CategoryYour scorePeer avgDeltaPercentile
Performance9372+21—
Security5865-7—
Accessibility7059+11—
SEO8990-1—
Infrastructure10086+14—
Compliance8878+10—
Content7583-8—
Sustainability10068+32—

Better than 95% of core-js sites

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Category: JavaScript libraries

core-js

Based on 1582 real audits

36
Avg. Performance
88
Avg. Accessibility
84
Avg. Best Practices
91
Avg. SEO
65
Avg. Security
72
Avg. Composite
36 /100
Avg. Performance
374 ms
Avg. TTFB
72 /100
Avg. Composite
1582
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 66/100.

Recent Audits

See all 1488 websites using core-js →
SitePerformanceGradeAudited
www.setandsetting-retreat.com26C2026-06-12
bestbuy.com51C2026-06-11
BestBuy.com59C2026-06-11
cn.aliyun.com31C2026-06-09
goldsmithsrvrepairs.com66B2026-06-09
Www.tsipower.in64B2026-06-08
patagonia.co.kr27C2026-06-07
icloud.com50C2026-06-06
www.melbournepolytechnic.edu.au13B2026-06-04
www.7starshhc.com32C2026-05-29

Commonly Used With

Sites that use core-js also commonly use:

Open Graph Miscellaneous 1347Google Search Console Analytics 1219Google Tag Manager Tag managers 1182Google Analytics Analytics 925Microsoft Analytics 857jQuery JavaScript libraries 779HSTS Security 747Priority Hints Performance 711Facebook SDK Analytics 551Google Workspace Email 546

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 Google Workspace

FAQ

What is the average Lighthouse performance score for core-js sites?
Based on 1582 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 65/100 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 374ms based on 1582 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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