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Your site vs. core-js average

Your site
81
core-js average
72
CategoryYour scorePeer avgDeltaPercentile
Performance8572+13—
Security7965+14—
Accessibility8459+25—
SEO9190+1—
Infrastructure8286-4—
Compliance6878-10—
Content5683-27—
Sustainability8168+13—

Better than 97% of core-js sites

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Category: JavaScript libraries

core-js

Based on 1560 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
371 ms
Avg. TTFB
72 /100
Avg. Composite
1560
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 48/100.

Recent Audits

See all 1472 websites using core-js →
SitePerformanceGradeAudited
Diehl.com65B2026-05-17
Bankrate.com30C2026-05-16
dev.xn--80avc2av3a.xn--p1ai42C2026-05-15
warriorwillpower.com26C2026-05-15
www.lusciousleopard.com37C2026-05-15
enjoycbd.es34C2026-05-13
threatmodeler.com48B2026-05-11
www.activatedigital.co.uk59B2026-05-11
www.gesundheitswelt.de63B2026-05-11
LorientHaus.com43B2026-05-11

Commonly Used With

Sites that use core-js also commonly use:

Open Graph Miscellaneous 1331Google Search Console Analytics 1210Google Tag Manager Tag managers 1169Google Analytics Analytics 914Microsoft Analytics 849jQuery JavaScript libraries 769HSTS Security 732Priority Hints Performance 700Facebook SDK Analytics 544Google Workspace Email 543

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 1560 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 371ms based on 1560 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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