Skip to content

core-js vs WordPress.com

Based on 1840 and 15 real audits

View core-js details | View WordPress.com details
Metriccore-jsWordPress.comWinner
Performance3759WordPress.com
Accessibility8890WordPress.com
Best Practices8596WordPress.com
SEO9196WordPress.com
Security6769WordPress.com
TTFB439ms393msWordPress.com
Composite7478WordPress.com
Performance
core-js
37
WordPress.com
59
Accessibility
core-js
88
WordPress.com
90
Security
core-js
67
WordPress.com
69
SEO
core-js
91
WordPress.com
96
Composite
core-js
74
WordPress.com
78

WordPress.com outperforms core-js in 7 of 7 categories, with a stronger composite score (78 vs 74). core-js leads in no categories.

When to choose core-js

core-js doesn't clearly lead WordPress.com in any category on the sampled sites — pick it based on developer experience, ecosystem, or existing team skills rather than the audit scores.

When to choose WordPress.com

Choose WordPress.com when your primary concern is server response time and performance. Its audit data shows consistent strength in these areas across the sampled sites.

How this comparison was built

Scores are medians across 1840 audited core-js sites and 15 audited WordPress.com sites in the BeaverCheck database. Every audit runs the same 100+ checks — Lighthouse performance, security headers, accessibility, SEO, server response time — against a real URL. No vendor input, no sponsorship, no affiliate links. Read the full methodology →

FAQ

Which is faster, core-js or WordPress.com?
Based on real BeaverCheck audits, WordPress.com sites score higher on Lighthouse performance (59 vs 37 on average).
Which has better security, core-js or WordPress.com?
WordPress.com sites score higher on security analysis (69 vs 67 on average).
Which has better accessibility, core-js or WordPress.com?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor WordPress.com (90 vs 88). Both technologies can be made fully accessible with care — the difference reflects common patterns in the sampled sites, not inherent platform limits.
Which is better for SEO, core-js or WordPress.com?
WordPress.com sites score higher on Lighthouse SEO signals (96 vs 91 on average), which cover meta tags, crawlability, mobile friendliness, and structured data. Content strategy and backlinks still matter more than platform choice for ranking.
Which has faster server response (TTFB), core-js or WordPress.com?
WordPress.com sites show lower Time to First Byte (393 ms vs 439 ms on average). TTFB depends heavily on hosting and CDN setup rather than the technology itself, but the sampled sites suggest a meaningful difference in common deployment patterns.
Should I choose core-js or WordPress.com for my website?
Both platforms have trade-offs. WordPress.com scores higher on overall composite score while core-js may excel in metrics you care about most. Run a free BeaverCheck audit on a real site using each to compare the metrics relevant to your use case.
Audit your own site

Send Feedback