Bootstrap vs USWDS
Head-to-head usage across the sites we track.
Top sites by authority
Bootstrap · USWDS · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
181
22
Open Page Rank 8+
3,822
144
Open Page Rank 7+
18,772
233
Open Page Rank 6+
39,549
280
Open Page Rank 5+
73,510
318
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Bootstrap · USWDS · share of sites in each country using one or the other
United States
783,149
610
India
375,468
269
Germany
285,193
152
United Kingdom
258,945
197
Brazil
247,896
163
France
233,698
131
Italy
215,264
124
Canada
174,973
228
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Bootstrap | USWDS |
|---|---|---|
| LCP | 1.8 s | 1.4 s |
| INP | 75 ms | 50 ms |
| CLS | 0 | 0 |
| TTFB | 800 ms | 600 ms |
Median site's p75 values from the Chrome UX Report, Aug 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.