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+
180
2
Open Page Rank 8+
3,860
11
Open Page Rank 7+
18,993
15
Open Page Rank 6+
40,203
19
Open Page Rank 5+
74,817
21
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
886,770
48
India
429,293
45
Germany
322,762
39
United Kingdom
295,976
64
France
279,130
40
Brazil
273,285
28
Italy
251,088
34
Spain
202,979
40
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Bootstrap | GOV.UK Toolkit |
|---|---|---|
| LCP | 1.8 s | 1.2 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 800 ms | 500 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.