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Your site vs. core-js average

Your site
78
core-js average
72
CategoryYour scorePeer avgDeltaPercentile
Performance7672+4—
Security7865+13—
Accessibility7459+15—
SEO9590+5—
Infrastructure8786+1—
Compliance6378-15—
Content83830—
Sustainability6768-1—

Better than 91% of core-js sites

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Category: JavaScript libraries

core-js

Based on 1559 real audits

35
Avg. Performance
88
Avg. Accessibility
83
Avg. Best Practices
91
Avg. SEO
65
Avg. Security
72
Avg. Composite
35 /100
Avg. Performance
370 ms
Avg. TTFB
72 /100
Avg. Composite
1559
Sites Audited

How core-js sites compare

core-js sites tend to score below average on performance (35/100), compared to the global average of 48/100.

Recent Audits

See all 1471 websites using core-js →
SitePerformanceGradeAudited
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
BeyondCarat.com27C2026-05-11
etxpsych.com55B2026-05-10

Commonly Used With

Sites that use core-js also commonly use:

Open Graph Miscellaneous 1329Google Search Console Analytics 1210Google Tag Manager Tag managers 1168Google Analytics Analytics 913Microsoft Analytics 847jQuery JavaScript libraries 769HSTS Security 732Priority Hints Performance 700Google Workspace Email 543Facebook SDK Analytics 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 Google Workspacecore-js vs Facebook SDK

FAQ

What is the average Lighthouse performance score for core-js sites?
Based on 1559 real audits, core-js sites score an average of 35/100 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 370ms based on 1559 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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