| Metric | core-js | Kinsta | Winner |
|---|---|---|---|
| Performance | 36 | 40 | Kinsta |
| Accessibility | 88 | 86 | core-js |
| Best Practices | 83 | 86 | Kinsta |
| SEO | 91 | 87 | core-js |
| Security | 64 | 67 | Kinsta |
| TTFB | 359ms | 344ms | Kinsta |
| Composite | 72 | 74 | Kinsta |
Kinsta outperforms core-js in 5 of 7 categories, with a stronger composite score (74 vs 72). core-js leads in accessibility, SEO.
Choose core-js when your primary concern is SEO and accessibility. Its audit data shows consistent strength in these areas across the sampled sites.
Choose Kinsta when your primary concern is server response time and performance. Its audit data shows consistent strength in these areas across the sampled sites.
Scores are medians across 1488 audited core-js sites and 13 audited Kinsta 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 →
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