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core-js vs Rebuy

Based on 1582 and 3 real audits

View core-js details | View Rebuy details
Metriccore-jsRebuyWinner
Performance3631core-js
Accessibility8895Rebuy
Best Practices8479core-js
SEO9190core-js
Security6568Rebuy
TTFB374ms115msRebuy
Composite7273Rebuy
Performance
core-js
36
Rebuy
31
Accessibility
core-js
88
Rebuy
95
Security
core-js
65
Rebuy
68
SEO
core-js
91
Rebuy
90
Composite
core-js
72
Rebuy
73

Rebuy outperforms core-js in 4 of 7 categories, with a stronger composite score (73 vs 72). core-js leads in performance, best practices, SEO.

When to choose core-js

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

When to choose Rebuy

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

How this comparison was built

Scores are medians across 1582 audited core-js sites and 3 audited Rebuy 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 →

Small sample: one or both technologies have fewer than 10 audited sites. Treat these numbers as directional — medians stabilize around 20–30 audits per side.

FAQ

Which is faster, core-js or Rebuy?
Based on real BeaverCheck audits, core-js sites score higher on Lighthouse performance (36 vs 31 on average).
Which has better security, core-js or Rebuy?
Rebuy sites score higher on security analysis (68 vs 65 on average).
Which has better accessibility, core-js or Rebuy?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor Rebuy (95 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 Rebuy?
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 Rebuy?
Rebuy sites show lower Time to First Byte (115 ms vs 374 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 Rebuy for my website?
Both platforms have trade-offs. core-js 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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