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Your site vs. core-js average

Your site
73
core-js average
72
CategoryYour scorePeer avgDeltaPercentile
Performance7372+1—
Security7465+9—
Accessibility6059+1—
SEO7490-16—
Infrastructure8586-1—
Compliance7178-7—
Content8983+6—
Sustainability7068+2—

Better than 48% of core-js sites

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Category: JavaScript libraries

core-js

Based on 1605 real audits

36
Avg. Performance
88
Avg. Accessibility
84
Avg. Best Practices
91
Avg. SEO
65
Avg. Security
72
Avg. Composite
36 /100
Avg. Performance
384 ms
Avg. TTFB
72 /100
Avg. Composite
1605
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 52/100.

Recent Audits

View adoption trends → See all 1503 websites using core-js →
SitePerformanceGradeAudited
cnbc.com8C2026-07-13
bangbros.com7C2026-07-13
latinapress.it48B2026-07-13
miodottore.it27B2026-07-13
aziende.virgilio.it31C2026-07-12
enel.com31B2026-07-11
bangbros.com8C2026-07-11
conad.it34B2026-07-11
brazzers.com2C2026-07-11
conengagroup.com38B2026-07-10

Commonly Used With

Sites that use core-js also commonly use:

Open Graph Miscellaneous 1366Google Search Console Analytics 1231Google Tag Manager Tag managers 1191Google Analytics Analytics 934Microsoft Analytics 867jQuery JavaScript libraries 792HSTS Security 760Priority Hints Performance 724Facebook SDK Analytics 557Google Workspace Email 553

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 Google Workspace

FAQ

What is the average Lighthouse performance score for core-js sites?
Based on 1605 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 65/100 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 384ms based on 1605 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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