Skip to content

Your site vs. core-js average

Your site
73
core-js average
72
CategoryYour scorePeer avgDeltaPercentile
Performance8372+11—
Security6365-2—
Accessibility5559-4—
SEO9490+4—
Infrastructure8586-1—
Compliance7278-6—
Content6583-18—
Sustainability8668+18—

Better than 48% of core-js sites

Run another audit to improve your score →

Category: JavaScript libraries

core-js

Based on 1604 real audits

35
Avg. Performance
87
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
1604
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 53/100.

Recent Audits

View adoption trends → See all 1502 websites using core-js →
SitePerformanceGradeAudited
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
blissagency.it39B2026-07-10
twitter.com33B2026-07-10
conad.it40B2026-07-10

Commonly Used With

Sites that use core-js also commonly use:

Open Graph Miscellaneous 1364Google Search Console Analytics 1229Google Tag Manager Tag managers 1190Google Analytics Analytics 933Microsoft Analytics 866jQuery JavaScript libraries 791HSTS Security 758Priority Hints Performance 722Facebook SDK Analytics 557Google Workspace Email 552

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 1604 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 1604 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.

Audit your core-js site now

Run Audit

Send Feedback