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core-js vs Onsen UI

Based on 2041 and 81 real audits

View core-js details | View Onsen UI details
Metriccore-jsOnsen UIWinner
Performance3744Onsen UI
Accessibility8887core-js
Best Practices8686Tie
SEO9190core-js
Security6867core-js
TTFB483ms387msOnsen UI
Composite7475Onsen UI
Performance
core-js
37
Onsen UI
44
Accessibility
core-js
88
Onsen UI
87
Security
core-js
68
Onsen UI
67
SEO
core-js
91
Onsen UI
90
Composite
core-js
74
Onsen UI
75

core-js and Onsen UI are closely matched, each leading in different categories. core-js has a composite score of 74 while Onsen UI scores 75.

When to choose core-js

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

When to choose Onsen UI

Choose Onsen UI 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 2041 audited core-js sites and 81 audited Onsen UI 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 Onsen UI?
Based on real BeaverCheck audits, Onsen UI sites score higher on Lighthouse performance (44 vs 37 on average).
Which has better security, core-js or Onsen UI?
core-js sites score higher on security analysis (68 vs 67 on average).
Which has better accessibility, core-js or Onsen UI?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor core-js (88 vs 87). 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 Onsen UI?
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 Onsen UI?
Onsen UI sites show lower Time to First Byte (387 ms vs 483 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 Onsen UI for my website?
Both platforms have trade-offs. Onsen UI 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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