Bootstrap vs Milligram
Head-to-head usage across the sites we track.
Top sites by authority
Bootstrap · Milligram · 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
8
Open Page Rank 7+
18,993
15
Open Page Rank 6+
40,203
19
Open Page Rank 5+
74,817
25
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Bootstrap · Milligram · share of sites in each country using one or the other
United States
886,770
115
India
429,293
70
Germany
322,762
71
United Kingdom
295,976
61
France
279,130
59
Brazil
273,285
61
Italy
251,088
51
Spain
202,979
59
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Bootstrap | Milligram |
|---|---|---|
| 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.