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core-js vs Yett

Based on 1599 and 1 real audits

View core-js details | View Yett details
Metriccore-jsYettWinner
Performance3630core-js
Accessibility88100Yett
Best Practices8481core-js
SEO9192Yett
Security6564core-js
TTFB379ms125msYett
Composite7273Yett
Performance
core-js
36
Yett
30
Accessibility
core-js
88
Yett
100
Security
core-js
65
Yett
64
SEO
core-js
91
Yett
92
Composite
core-js
72
Yett
73

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

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 Yett

Choose Yett 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 1599 audited core-js sites and 1 audited Yett 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 Yett?
Based on real BeaverCheck audits, core-js sites score higher on Lighthouse performance (36 vs 30 on average).
Which has better security, core-js or Yett?
core-js sites score higher on security analysis (65 vs 64 on average).
Which has better accessibility, core-js or Yett?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor Yett (100 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 Yett?
Yett sites score higher on Lighthouse SEO signals (92 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 Yett?
Yett sites show lower Time to First Byte (125 ms vs 379 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 Yett 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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