| Metric | core-js | Lightbox | Winner |
|---|---|---|---|
| Performance | 36 | 38 | Lightbox |
| Accessibility | 88 | 87 | core-js |
| Best Practices | 84 | 82 | core-js |
| SEO | 91 | 91 | Tie |
| Security | 65 | 64 | core-js |
| TTFB | 371ms | 451ms | core-js |
| Composite | 72 | 72 | Tie |
core-js outperforms Lightbox in 4 of 7 categories, with a stronger composite score (72 vs 72). Lightbox leads in performance.
Choose core-js when your primary concern is server response time and best practices. Its audit data shows consistent strength in these areas across the sampled sites.
Choose Lightbox when your primary concern is performance. Its audit data shows consistent strength in these areas across the sampled sites.
Scores are medians across 1570 audited core-js sites and 48 audited Lightbox 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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