Bootstrap vs siimple
Head-to-head usage across the sites we track.
Top sites by authority
Bootstrap · siimple · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
181
0
Open Page Rank 8+
3,817
0
Open Page Rank 7+
18,570
0
Open Page Rank 6+
39,005
0
Open Page Rank 5+
72,373
0
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Bootstrap · siimple · share of sites in each country using one or the other
United States
758,929
1
India
368,409
2
Germany
277,428
1
United Kingdom
255,833
1
Brazil
241,343
1
France
234,434
2
Italy
222,549
1
Spain
183,194
1
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Bootstrap | siimple |
|---|---|---|
| LCP | 1.8 s | 4.4 s |
| INP | 75 ms | 150 ms |
| CLS | 0 | 0 |
| TTFB | 800 ms | 3050 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.