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+
184
12
Open Page Rank 8+
3,816
49
Open Page Rank 7+
18,496
112
Open Page Rank 6+
38,723
170
Open Page Rank 5+
71,693
246
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
758,929
1,230
India
368,409
706
Germany
277,428
615
United Kingdom
255,833
586
Brazil
241,343
517
France
234,434
571
Italy
222,549
501
Spain
183,194
467
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Bootstrap | Bulma |
|---|---|---|
| LCP | 1.8 s | 1.6 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 800 ms | 700 ms |
Median site's p75 values from the Chrome UX Report, Sep 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 |
Bulma to Bootstrap
| Domain | When |
|---|---|
| cpconcursos.com.br | May 2026 |
| sapp-peru.com | Feb 2026 |
| snotr.com | Dec 2025 |
| lewdclips.com | Dec 2025 |