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+
3,817
6
Open Page Rank 7+
18,570
7
Open Page Rank 6+
39,005
7
Open Page Rank 5+
72,373
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
758,929
16
India
368,409
11
Germany
277,428
19
United Kingdom
255,833
14
Brazil
241,343
8
France
234,434
11
Italy
222,549
9
Spain
183,194
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 | 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.