| Metric | D3 | HSTS | Winner |
|---|---|---|---|
| Performance | 50 | 49 | D3 |
| Accessibility | 83 | 89 | HSTS |
| Best Practices | 88 | 88 | Tie |
| SEO | 90 | 91 | HSTS |
| Security | 70 | 70 | Tie |
| TTFB | 312ms | 374ms | D3 |
| Composite | 74 | 75 | HSTS |
HSTS outperforms D3 in 3 of 7 categories, with a stronger composite score (75 vs 74). D3 leads in performance, TTFB.
Choose D3 when your primary concern is server response time and performance. Its audit data shows consistent strength in these areas across the sampled sites.
Choose HSTS when your primary concern is accessibility and SEO. Its audit data shows consistent strength in these areas across the sampled sites.
Scores are medians across 13 audited D3 sites and 2691 audited HSTS 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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