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Your site vs. core-js average

Your site
74
core-js average
73
CategoryYour scorePeer avgDeltaPercentile
Performance8272+10—
Security5965-6—
Accessibility7759+18—
SEO8790-3—
Infrastructure6986-17—
Compliance8678+8—
Content6583-18—
Sustainability8368+15—

Better than 60% of core-js sites

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Category: JavaScript libraries

core-js

Based on 1609 real audits

35
Avg. Performance
88
Avg. Accessibility
84
Avg. Best Practices
91
Avg. SEO
65
Avg. Security
72
Avg. Composite
35 /100
Avg. Performance
383 ms
Avg. TTFB
72 /100
Avg. Composite
1609
Sites Audited

How core-js sites compare

core-js sites tend to score below average on performance (35/100), compared to the global average of 54/100.

Recent Audits

View adoption trends → See all 1504 websites using core-js →
SitePerformanceGradeAudited
psicologi-italia.it54C2026-07-16
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

Commonly Used With

Sites that use core-js also commonly use:

Open Graph Miscellaneous 1367Google Search Console Analytics 1232Google Tag Manager Tag managers 1192Google Analytics Analytics 935Microsoft Analytics 867jQuery JavaScript libraries 793HSTS Security 760Priority Hints Performance 724Facebook SDK Analytics 558Google Workspace Email 554

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 1609 real audits, core-js sites score an average of 35/100 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 383ms based on 1609 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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