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Your site vs. core-js average

Your site
78
core-js average
74
CategoryYour scorePeer avgDeltaPercentile
Performance7574+1—
Security7968+11—
Accessibility7163+8—
SEO9190+1—
Infrastructure8386-3—
Compliance6777-10—
Content9182+9—
Sustainability7570+5—

Better than 70% of core-js sites

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Category: JavaScript libraries

core-js

Based on 2056 real audits

38
Avg. Performance
88
Avg. Accessibility
86
Avg. Best Practices
91
Avg. SEO
68
Avg. Security
74
Avg. Composite
38 /100
Avg. Performance
488 ms
Avg. TTFB
74 /100
Avg. Composite
2056
Sites Audited

How core-js sites compare

core-js sites tend to score below average on performance (38/100), compared to the global average of 59/100.

Recent Audits

View adoption trends → See all 1808 websites using core-js →
SitePerformanceGradeAudited
unqc.de81B2026-11-12
www.mossandmolt.com52B2026-11-12
www.treccani.it27C2026-11-11
decay.co.in58B2026-11-11
omegait.ru28C2026-11-11
long-change.mysites.io59B2026-11-11
www.mossandmolt.com51B2026-11-11
fjackets.com45C2026-11-10
socialwebtv.it68B2026-11-10
www.mossandmolt.com53B2026-11-10

Commonly Used With

Sites that use core-js also commonly use:

Open Graph Miscellaneous 1770Google Tag Manager Tag managers 1473Google Search Console Analytics 1396Google Analytics Analytics 1190jQuery JavaScript libraries 1074Priority Hints Performance 1058HSTS Security 976Microsoft Analytics 966Cloudflare CDN 752Facebook SDK Analytics 713

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 HSTScore-js vs Microsoftcore-js vs Cloudflarecore-js vs Facebook SDK

FAQ

What is the average Lighthouse performance score for core-js sites?
Based on 2056 real audits, core-js sites score an average of 38/100 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 488ms based on 2056 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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