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core-js vs Visa

Based on 1688 and 11 real audits

View core-js details | View Visa details
Metriccore-jsVisaWinner
Performance3650Visa
Accessibility8884core-js
Best Practices8490Visa
SEO9192Visa
Security6678Visa
TTFB396ms315msVisa
Composite7378Visa
Performance
core-js
36
Visa
50
Accessibility
core-js
88
Visa
84
Security
core-js
66
Visa
78
SEO
core-js
91
Visa
92
Composite
core-js
73
Visa
78

Visa outperforms core-js in 6 of 7 categories, with a stronger composite score (78 vs 73). core-js leads in accessibility.

When to choose core-js

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

When to choose Visa

Choose Visa 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 1688 audited core-js sites and 11 audited Visa 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 Visa?
Based on real BeaverCheck audits, Visa sites score higher on Lighthouse performance (50 vs 36 on average).
Which has better security, core-js or Visa?
Visa sites score higher on security analysis (78 vs 66 on average).
Which has better accessibility, core-js or Visa?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor core-js (88 vs 84). 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 Visa?
Visa sites score higher on Lighthouse SEO signals (92 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 Visa?
Visa sites show lower Time to First Byte (315 ms vs 396 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 Visa for my website?
Both platforms have trade-offs. Visa 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.
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