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Your site vs. core-js average

Your site
73
core-js average
74
CategoryYour scorePeer avgDeltaPercentile
Performance8574+11—
Security5968-9—
Accessibility4962-13—
SEO8890-2—
Infrastructure8886+2—
Compliance8177+4—
Content6782-15—
Sustainability8869+19—

Better than 40% of core-js sites

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Category: JavaScript libraries

core-js

Based on 1934 real audits

37
Avg. Performance
87
Avg. Accessibility
85
Avg. Best Practices
91
Avg. SEO
68
Avg. Security
74
Avg. Composite
37 /100
Avg. Performance
475 ms
Avg. TTFB
74 /100
Avg. Composite
1934
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 60/100.

Recent Audits

View adoption trends → See all 1735 websites using core-js →
SitePerformanceGradeAudited
aliava.com32C2026-10-26
www.fairindigo.com31B2026-10-26
flarelighters.com78B2026-10-26
bolbala.in59B2026-10-26
flarelighters.com80B2026-10-26
lagunatools.com25B2026-10-26
flarelighters.com39B2026-10-25
www.lioc.nl/en/36C2026-10-25
svennouwen.nl94A2026-10-24
megagamespk.com32B2026-10-24

Commonly Used With

Sites that use core-js also commonly use:

Open Graph Miscellaneous 1647Google Tag Manager Tag managers 1414Google Search Console Analytics 1345Google Analytics Analytics 1133jQuery JavaScript libraries 1014Priority Hints Performance 959Microsoft Analytics 916HSTS Security 889Facebook SDK Analytics 669Facebook Pixel Analytics 659

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 1934 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 68/100 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 475ms based on 1934 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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