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core-js vs Rakuten

Based on 1582 and 8 real audits

View core-js details | View Rakuten details
Metriccore-jsRakutenWinner
Performance3619core-js
Accessibility8888Tie
Best Practices8481core-js
SEO9186core-js
Security6568Rakuten
TTFB374ms240msRakuten
Composite7272Tie
Performance
core-js
36
Rakuten
19
Accessibility
core-js
88
Rakuten
88
Security
core-js
65
Rakuten
68
SEO
core-js
91
Rakuten
86
Composite
core-js
72
Rakuten
72

core-js outperforms Rakuten in 3 of 7 categories, with a stronger composite score (72 vs 72). Rakuten leads in security, TTFB.

When to choose core-js

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

When to choose Rakuten

Choose Rakuten 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 1582 audited core-js sites and 8 audited Rakuten 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 Rakuten?
Based on real BeaverCheck audits, core-js sites score higher on Lighthouse performance (36 vs 19 on average).
Which has better security, core-js or Rakuten?
Rakuten sites score higher on security analysis (68 vs 65 on average).
Which has better accessibility, core-js or Rakuten?
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 Rakuten?
core-js sites score higher on Lighthouse SEO signals (91 vs 86 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 Rakuten?
Rakuten sites show lower Time to First Byte (240 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 Rakuten 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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