| Metric | D3 | Modernizr | Winner |
|---|---|---|---|
| Performance | 43 | 44 | Modernizr |
| Accessibility | 82 | 85 | Modernizr |
| Best Practices | 87 | 86 | D3 |
| SEO | 90 | 90 | Tie |
| Security | 67 | 64 | D3 |
| TTFB | 298ms | 402ms | D3 |
| Composite | 73 | 73 | Tie |
D3 outperforms Modernizr in 3 of 7 categories, with a stronger composite score (73 vs 73). Modernizr leads in performance, accessibility.
Choose D3 when your primary concern is server response time and security. Its audit data shows consistent strength in these areas across the sampled sites.
Choose Modernizr when your primary concern is accessibility and performance. Its audit data shows consistent strength in these areas across the sampled sites.
Scores are medians across 11 audited D3 sites and 261 audited Modernizr 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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