| Metric | core-js | YouTube | Winner |
|---|---|---|---|
| Performance | 36 | 36 | Tie |
| Accessibility | 88 | 88 | Tie |
| Best Practices | 84 | 86 | YouTube |
| SEO | 91 | 91 | Tie |
| Security | 65 | 64 | core-js |
| TTFB | 371ms | 436ms | core-js |
| Composite | 72 | 72 | Tie |
core-js outperforms YouTube in 2 of 7 categories, with a stronger composite score (72 vs 72). YouTube leads in best practices.
Choose core-js when your primary concern is server response time and security. Its audit data shows consistent strength in these areas across the sampled sites.
Choose YouTube when your primary concern is best practices. Its audit data shows consistent strength in these areas across the sampled sites.
Scores are medians across 1570 audited core-js sites and 310 audited YouTube 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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