Skip to content

core-js vs VWO

Based on 1637 and 96 real audits

View core-js details | View VWO details
Metriccore-jsVWOWinner
Performance3640VWO
Accessibility8888Tie
Best Practices8486VWO
SEO9190core-js
Security6566VWO
TTFB385ms289msVWO
Composite7373Tie
Performance
core-js
36
VWO
40
Accessibility
core-js
88
VWO
88
Security
core-js
65
VWO
66
SEO
core-js
91
VWO
90
Composite
core-js
73
VWO
73

VWO outperforms core-js in 4 of 7 categories, with a stronger composite score (73 vs 73). core-js leads in SEO.

When to choose core-js

Choose core-js when your primary concern is SEO. Its audit data shows consistent strength in these areas across the sampled sites.

When to choose VWO

Choose VWO 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 1637 audited core-js sites and 96 audited VWO 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 VWO?
Based on real BeaverCheck audits, VWO sites score higher on Lighthouse performance (40 vs 36 on average).
Which has better security, core-js or VWO?
VWO sites score higher on security analysis (66 vs 65 on average).
Which has better accessibility, core-js or VWO?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor core-js (88 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 VWO?
core-js sites score higher on Lighthouse SEO signals (91 vs 90 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 VWO?
VWO sites show lower Time to First Byte (289 ms vs 385 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 VWO for my website?
Both platforms have trade-offs. VWO 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