Bootstrap vs VKUI
Head-to-head usage across the sites we track.
Top sites by authority
Bootstrap · VKUI · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
181
1
Open Page Rank 8+
3,822
6
Open Page Rank 7+
18,772
7
Open Page Rank 6+
39,549
7
Open Page Rank 5+
73,510
7
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Bootstrap · VKUI · share of sites in each country using one or the other
United States
783,149
18
India
375,468
11
Germany
285,193
18
United Kingdom
258,945
14
Brazil
247,896
8
France
233,698
9
Italy
215,264
9
Canada
174,973
9
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Bootstrap | VKUI |
|---|---|---|
| LCP | 1.8 s | 2.7 s |
| INP | 75 ms | 125 ms |
| CLS | 0 | 0 |
| TTFB | 800 ms | 800 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.