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+
184
0
Open Page Rank 8+
3,816
0
Open Page Rank 7+
18,496
8
Open Page Rank 6+
38,723
12
Open Page Rank 5+
71,693
18
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
758,929
48
India
368,409
25
Germany
277,428
32
United Kingdom
255,833
24
Brazil
241,343
21
France
234,434
24
Italy
222,549
20
Spain
183,194
21
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Bootstrap | MetroUI |
|---|---|---|
| LCP | 1.8 s | 1.7 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.
MetroUI to Bootstrap
| Domain | When |
|---|---|
| emporioveggie.com.br | Jun 2026 |
| lanchonetedog.com.br | Mar 2026 |