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Your site vs. core-js average

Your site
71
core-js average
74
CategoryYour scorePeer avgDeltaPercentile
Performance6973-4—
Security6568-3—
Accessibility6462+2—
SEO7790-13—
Infrastructure9386+7—
Compliance8177+4—
Content6082-22—
Sustainability6669-3—

Better than 19% of core-js sites

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Category: JavaScript libraries

core-js

Based on 1932 real audits

36
Avg. Performance
88
Avg. Accessibility
85
Avg. Best Practices
91
Avg. SEO
68
Avg. Security
74
Avg. Composite
36 /100
Avg. Performance
476 ms
Avg. TTFB
74 /100
Avg. Composite
1932
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 60/100.

Recent Audits

View adoption trends → See all 1734 websites using core-js →
SitePerformanceGradeAudited
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
casaliniecosrl.it56B2026-10-24

Commonly Used With

Sites that use core-js also commonly use:

Open Graph Miscellaneous 1646Google Tag Manager Tag managers 1413Google Search Console Analytics 1344Google Analytics Analytics 1132jQuery JavaScript libraries 1013Priority Hints Performance 958Microsoft Analytics 916HSTS Security 888Facebook SDK Analytics 668Facebook Pixel Analytics 658

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 1932 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 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 476ms based on 1932 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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