Aura vs Bootstrap
Head-to-head usage across the sites we track.
Top sites by authority
Aura · Bootstrap · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
35
181
Open Page Rank 8+
358
3,822
Open Page Rank 7+
808
18,772
Open Page Rank 6+
1,140
39,549
Open Page Rank 5+
1,450
73,510
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Aura · Bootstrap · share of sites in each country using one or the other
United States
2,773
783,149
India
1,953
375,468
Germany
1,507
285,193
United Kingdom
1,857
258,945
Brazil
1,231
247,896
France
1,443
233,698
Italy
1,298
215,264
Canada
1,807
174,973
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Aura | Bootstrap |
|---|---|---|
| LCP | 2.1 s | 1.8 s |
| INP | 100 ms | 75 ms |
| CLS | 0.05 | 0 |
| TTFB | 700 ms | 800 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.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
Aura to Bootstrap
| Domain | When |
|---|---|
| mexinsurance.com | Sep 2025 |