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+
184
3
Open Page Rank 8+
3,816
11
Open Page Rank 7+
18,496
14
Open Page Rank 6+
38,723
17
Open Page Rank 5+
71,693
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
758,929
42
India
368,409
38
Germany
277,428
32
United Kingdom
255,833
58
Brazil
241,343
24
France
234,434
33
Italy
222,549
29
Spain
183,194
32
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, 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.