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Your site vs. core-js average

Your site
83
core-js average
73
CategoryYour scorePeer avgDeltaPercentile
Performance8973+16—
Security7966+13—
Accessibility7660+16—
SEO8790-3—
Infrastructure86860—
Compliance7077-7—
Content9582+13—
Sustainability9069+21—

Better than 97% of core-js sites

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Category: JavaScript libraries

core-js

Based on 1743 real audits

37
Avg. Performance
88
Avg. Accessibility
85
Avg. Best Practices
91
Avg. SEO
66
Avg. Security
73
Avg. Composite
37 /100
Avg. Performance
425 ms
Avg. TTFB
73 /100
Avg. Composite
1743
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 70/100.

Recent Audits

View adoption trends → See all 1606 websites using core-js →
SitePerformanceGradeAudited
accenture.com25B2026-09-21
/de-DE/AccentureCareers/job/New-York-One-Manhattan-West-C...45B2026-09-21
www.hightolowvoltage.com32B2026-09-21
www.jcl.energy54B2026-09-21
www.hightolowvoltage.com35B2026-09-21
www.maddox.com41C2026-09-21
ukrspecsystems.ua27B2026-09-20
vishalperipherals.com35C2026-09-18
vishalperipherals.com29C2026-09-18
vishalperipherals.com34C2026-09-18

Commonly Used With

Sites that use core-js also commonly use:

Open Graph Miscellaneous 1479Google Search Console Analytics 1286Google Tag Manager Tag managers 1280Google Analytics Analytics 1011Microsoft Analytics 888jQuery JavaScript libraries 883HSTS Security 820Priority Hints Performance 805Facebook SDK Analytics 606Facebook Pixel Analytics 593

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 Pixel

FAQ

What is the average Lighthouse performance score for core-js sites?
Based on 1743 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 66/100 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 425ms based on 1743 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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