Based on 4 and 2465 real audits
| Metric | Formalize CSS | Microsoft | Winner |
|---|---|---|---|
| Performance | 52 | 39 | Formalize CSS |
| Accessibility | 81 | 89 | Microsoft |
| Best Practices | 83 | 86 | Microsoft |
| SEO | 81 | 89 | Microsoft |
| Security | 66 | 67 | Microsoft |
| TTFB | 96ms | 329ms | Formalize CSS |
| Composite | 76 | 73 | Formalize CSS |
Microsoft outperforms Formalize CSS in 4 of 7 categories, with a stronger composite score (73 vs 76). Formalize CSS leads in performance, TTFB, composite score.
Choose Formalize CSS when your primary concern is server response time and performance. Its audit data shows consistent strength in these areas across the sampled sites.
Choose Microsoft 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 4 audited Formalize CSS sites and 2465 audited Microsoft 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 →
Small sample: one or both technologies have fewer than 10 audited sites. Treat these numbers as directional — medians stabilize around 20–30 audits per side.
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