Bootstrap vs GOV.UK Toolkit
Head-to-head usage across the sites we track.
Top sites by authority
Bootstrap · GOV.UK Toolkit · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
181
2
Open Page Rank 8+
3,822
11
Open Page Rank 7+
18,772
15
Open Page Rank 6+
39,549
18
Open Page Rank 5+
73,510
19
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Bootstrap · GOV.UK Toolkit · share of sites in each country using one or the other
United States
783,149
42
India
375,468
39
Germany
285,193
30
United Kingdom
258,945
58
Brazil
247,896
21
France
233,698
32
Italy
215,264
29
Canada
174,973
30
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Bootstrap | GOV.UK Toolkit |
|---|---|---|
| LCP | 1.8 s | 1.1 s |
| INP | 75 ms | 50 ms |
| CLS | 0 | 0 |
| TTFB | 800 ms | 500 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.