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core-js vs UIKit

Based on 1627 and 10 real audits

View core-js details | View UIKit details
Metriccore-jsUIKitWinner
Performance3652UIKit
Accessibility8889UIKit
Best Practices8490UIKit
SEO9191Tie
Security6567UIKit
TTFB385ms334msUIKit
Composite7375UIKit
Performance
core-js
36
UIKit
52
Accessibility
core-js
88
UIKit
89
Security
core-js
65
UIKit
67
SEO
core-js
91
UIKit
91
Composite
core-js
73
UIKit
75

UIKit outperforms core-js in 6 of 7 categories, with a stronger composite score (75 vs 73). core-js leads in no categories.

When to choose core-js

core-js doesn't clearly lead UIKit in any category on the sampled sites — pick it based on developer experience, ecosystem, or existing team skills rather than the audit scores.

When to choose UIKit

Choose UIKit 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 1627 audited core-js sites and 10 audited UIKit 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 UIKit?
Based on real BeaverCheck audits, UIKit sites score higher on Lighthouse performance (52 vs 36 on average).
Which has better security, core-js or UIKit?
UIKit sites score higher on security analysis (67 vs 65 on average).
Which has better accessibility, core-js or UIKit?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor UIKit (89 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 UIKit?
core-js sites score higher on Lighthouse SEO signals (91 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 UIKit?
UIKit sites show lower Time to First Byte (334 ms vs 385 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 UIKit for my website?
Both platforms have trade-offs. UIKit 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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