Bootstrap vs Bulma
Head-to-head usage across the sites we track.
Top sites by authority
Bootstrap · Bulma · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
181
12
Open Page Rank 8+
3,822
50
Open Page Rank 7+
18,772
103
Open Page Rank 6+
39,549
159
Open Page Rank 5+
73,510
240
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Bootstrap · Bulma · share of sites in each country using one or the other
United States
783,149
1,255
India
375,468
709
Germany
285,193
604
United Kingdom
258,945
593
Brazil
247,896
525
France
233,698
552
Italy
215,264
484
Canada
174,973
512
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Bootstrap | Bulma |
|---|---|---|
| LCP | 1.8 s | 1.7 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 800 ms | 700 ms |
Median site's p75 values from the Chrome UX Report, Aug 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
Bootstrap to Bulma
| Domain | When |
|---|---|
| ltc.ac.th | Apr 2026 |
| beruk-toto.com | Feb 2026 |
| sargivabrik.ee | Sep 2025 |
Bulma to Bootstrap
| Domain | When |
|---|---|
| cpconcursos.com.br | May 2026 |
| sapp-peru.com | Feb 2026 |
| snotr.com | Dec 2025 |
| lewdclips.com | Dec 2025 |