| Metric | core-js | Winner | |
|---|---|---|---|
| Performance | 37 | 38 | |
| Accessibility | 88 | 89 | |
| Best Practices | 85 | 85 | Tie |
| SEO | 91 | 90 | core-js |
| Security | 68 | 67 | core-js |
| TTFB | 476ms | 281ms | |
| Composite | 74 | 73 | core-js |
core-js and Facebook are closely matched, each leading in different categories. core-js has a composite score of 74 while Facebook scores 73.
Choose core-js when your primary concern is SEO and security. Its audit data shows consistent strength in these areas across the sampled sites.
Choose Facebook 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 1930 audited core-js sites and 1478 audited Facebook 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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