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Your site vs. core-js average

Your site
66
core-js average
72
CategoryYour scorePeer avgDelta
Performance6872-4
Security65650
Accessibility2357-34
SEO9290+2
Infrastructure9787+10
Compliance6278-16
Content8583+2
Sustainability5368-15
Run another audit to improve your score →

core-js

Based on 246 real audits

34
Avg. Performance
87
Avg. Accessibility
84
Avg. Best Practices
92
Avg. SEO
65
Avg. Security
72
Avg. Composite
34 /100
Avg. Performance
346 ms
Avg. TTFB
72 /100
Avg. Composite
246
Sites Audited

How core-js sites compare

core-js sites tend to score below average on performance (34/100), compared to the global average of 44/100.

Recent Audits

SitePerformanceGradeAudited
duolingo.com33C2026-04-15
euronews.com32C2026-04-15
theatlantic.com22C2026-04-15
coursera.org35C2026-04-15
9to5google.com53C2026-04-15
androidauthority.com29C2026-04-15
tomshardware.com7C2026-04-15
9to5mac.com59C2026-04-15
cnet.com26C2026-04-15
theverge.com31C2026-04-15

Commonly Used With

Sites that use core-js also commonly use:

Open Graph Miscellaneous 225Google Tag Manager Tag managers 189Priority Hints Performance 150Google Analytics Analytics 140Google Search Console Analytics 133HSTS Security 128Cart Functionality Ecommerce 96Microsoft Analytics 95Webpack Build Tool 93React JavaScript frameworks 92

Compare with...

core-js vs Open Graphcore-js vs Google Tag Managercore-js vs Priority Hintscore-js vs Google Analyticscore-js vs Google Search Consolecore-js vs HSTScore-js vs Cart Functionalitycore-js vs Microsoftcore-js vs Webpackcore-js vs React

FAQ

What is the average Lighthouse performance score for core-js sites?
Based on 246 real audits, core-js sites score an average of 34/100 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 346ms based on 246 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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