Based on 903 and 1 real audits
| Metric | Bootstrap | Twitter Flight | Winner |
|---|---|---|---|
| Performance | 46 | 39 | Bootstrap |
| Accessibility | 87 | 92 | Twitter Flight |
| Best Practices | 88 | 69 | Bootstrap |
| SEO | 90 | 100 | Twitter Flight |
| Security | 65 | 65 | Tie |
| TTFB | 432ms | 1197ms | Bootstrap |
| Composite | 74 | 75 | Twitter Flight |
Bootstrap and Twitter Flight are closely matched, each leading in different categories. Bootstrap has a composite score of 74 while Twitter Flight scores 75.
Choose Bootstrap 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 Twitter Flight when your primary concern is SEO and accessibility. Its audit data shows consistent strength in these areas across the sampled sites.
Scores are medians across 903 audited Bootstrap sites and 1 audited Twitter Flight 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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