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+
180
1
Open Page Rank 8+
3,860
5
Open Page Rank 7+
18,993
6
Open Page Rank 6+
40,203
6
Open Page Rank 5+
74,817
6
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
886,770
23
India
429,293
12
Germany
322,762
18
United Kingdom
295,976
13
France
279,130
10
Brazil
273,285
10
Italy
251,088
10
Spain
202,979
11
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Bootstrap | VKUI |
|---|---|---|
| LCP | 1.8 s | 3 s |
| INP | 75 ms | 137 ms |
| CLS | 0 | 0 |
| TTFB | 800 ms | 800 ms |
Median site's p75 values from the Chrome UX Report, Jun 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.