Bootstrap vs MetroUI
Head-to-head usage across the sites we track.
Top sites by authority
Bootstrap · MetroUI · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
180
0
Open Page Rank 8+
3,860
1
Open Page Rank 7+
18,993
8
Open Page Rank 6+
40,203
12
Open Page Rank 5+
74,817
17
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Bootstrap · MetroUI · share of sites in each country using one or the other
United States
886,770
55
India
429,293
31
Germany
322,762
36
United Kingdom
295,976
25
France
279,130
27
Brazil
273,285
24
Italy
251,088
23
Spain
202,979
22
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Bootstrap | MetroUI |
|---|---|---|
| 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, 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.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
MetroUI to Bootstrap
| Domain | When |
|---|---|
| emporioveggie.com.br | Jun 2026 |
| lanchonetedog.com.br | Mar 2026 |