Based on 1747 and 100 real audits
| Metric | core-js | Facebook Login | Winner |
|---|---|---|---|
| Performance | 37 | 37 | Tie |
| Accessibility | 88 | 84 | core-js |
| Best Practices | 85 | 84 | core-js |
| SEO | 91 | 90 | core-js |
| Security | 66 | 64 | core-js |
| TTFB | 424ms | 545ms | core-js |
| Composite | 73 | 71 | core-js |
core-js outperforms Facebook Login in 6 of 7 categories, with a stronger composite score (73 vs 71). Facebook Login leads in no categories.
Choose core-js when your primary concern is server response time and accessibility. Its audit data shows consistent strength in these areas across the sampled sites.
Facebook Login doesn't clearly lead core-js in any category on the sampled sites — pick it based on developer experience, ecosystem, or existing team skills rather than the audit scores.
Scores are medians across 1747 audited core-js sites and 100 audited Facebook Login 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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