Bootstrap vs NSW Design System
Head-to-head usage across the sites we track.
Top sites by authority
Bootstrap · NSW Design System · 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
2
Open Page Rank 7+
18,993
3
Open Page Rank 6+
40,203
7
Open Page Rank 5+
74,817
9
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Bootstrap · NSW Design System · share of sites in each country using one or the other
United States
886,770
17
India
429,293
15
Germany
322,762
11
United Kingdom
295,976
10
France
279,130
8
Brazil
273,285
9
Italy
251,088
12
Spain
202,979
9
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Bootstrap | NSW Design System |
|---|---|---|
| LCP | 1.8 s | 1.6 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 800 ms | 850 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.