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Your site vs. core-js average

Your site
78
core-js average
74
CategoryYour scorePeer avgDeltaPercentile
Performance8373+10—
Security7967+12—
Accessibility7662+14—
SEO90900—
Infrastructure7986-7—
Compliance6277-15—
Content6882-14—
Sustainability6069-9—

Better than 75% of core-js sites

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Category: JavaScript libraries

core-js

Based on 1905 real audits

36
Avg. Performance
87
Avg. Accessibility
84
Avg. Best Practices
91
Avg. SEO
67
Avg. Security
74
Avg. Composite
36 /100
Avg. Performance
446 ms
Avg. TTFB
74 /100
Avg. Composite
1905
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 62/100.

Recent Audits

View adoption trends → See all 1711 websites using core-js →
SitePerformanceGradeAudited
www.jamfactory.com.au30C2026-10-23
ecunewexperience.com50C2026-10-23
m.starmakerstudios.com/v/quick-recharge/official33C2026-10-23
gibsonlook.com40B2026-10-22
boody.com25C2026-10-22
lafemmeennoir.net30B2026-10-22
kieljamespatrick.com30B2026-10-22
provinceofcanada.com38B2026-10-22
www.simplymerino.com32B2026-10-22
farmgirlsfancyfrills.com30B2026-10-22

Commonly Used With

Sites that use core-js also commonly use:

Open Graph Miscellaneous 1626Google Tag Manager Tag managers 1395Google Search Console Analytics 1335Google Analytics Analytics 1116jQuery JavaScript libraries 991Priority Hints Performance 936Microsoft Analytics 913HSTS Security 879Facebook SDK Analytics 659Facebook Pixel Analytics 649

Compare with...

core-js vs Open Graphcore-js vs Google Tag Managercore-js vs Google Search Consolecore-js vs Google Analyticscore-js vs jQuerycore-js vs Priority Hintscore-js vs Microsoftcore-js vs HSTScore-js vs Facebook SDKcore-js vs Facebook Pixel

FAQ

What is the average Lighthouse performance score for core-js sites?
Based on 1905 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 67/100 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 446ms based on 1905 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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