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core-js vs Mastercard

Based on 1840 and 16 real audits

View core-js details | View Mastercard details
Metriccore-jsMastercardWinner
Performance3746Mastercard
Accessibility8885core-js
Best Practices8589Mastercard
SEO9193Mastercard
Security6778Mastercard
TTFB439ms308msMastercard
Composite7478Mastercard
Performance
core-js
37
Mastercard
46
Accessibility
core-js
88
Mastercard
85
Security
core-js
67
Mastercard
78
SEO
core-js
91
Mastercard
93
Composite
core-js
74
Mastercard
78

Mastercard outperforms core-js in 6 of 7 categories, with a stronger composite score (78 vs 74). 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 Mastercard

Choose Mastercard when your primary concern is server response time and security. 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 16 audited Mastercard 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 Mastercard?
Based on real BeaverCheck audits, Mastercard sites score higher on Lighthouse performance (46 vs 37 on average).
Which has better security, core-js or Mastercard?
Mastercard sites score higher on security analysis (78 vs 67 on average).
Which has better accessibility, core-js or Mastercard?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor core-js (88 vs 85). 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 Mastercard?
Mastercard sites score higher on Lighthouse SEO signals (93 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 Mastercard?
Mastercard sites show lower Time to First Byte (308 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 Mastercard for my website?
Both platforms have trade-offs. Mastercard 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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