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Category: JavaScript libraries

core-js

Based on 1599 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
379 ms
Avg. TTFB
72 /100
Avg. Composite
1599
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 53/100.

Recent Audits

View adoption trends → See all 1499 websites using core-js →
SitePerformanceGradeAudited
bangbros.com8C2026-07-11
conad.it34B2026-07-11
brazzers.com2C2026-07-11
conengagroup.com38B2026-07-10
blissagency.it39B2026-07-10
twitter.com33B2026-07-10
conad.it40B2026-07-10
psy.it55C2026-07-10
splsezzespa.it69B2026-07-10
splsezzespa.it63C2026-07-10

Commonly Used With

Sites that use core-js also commonly use:

Open Graph Miscellaneous 1361Google Search Console Analytics 1227Google Tag Manager Tag managers 1188Google Analytics Analytics 931Microsoft Analytics 865jQuery JavaScript libraries 788HSTS Security 757Priority Hints Performance 721Facebook SDK Analytics 556Google Workspace Email 551

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 1599 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 379ms based on 1599 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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