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+
33
180
Open Page Rank 8+
351
3,860
Open Page Rank 7+
806
18,993
Open Page Rank 6+
1,137
40,203
Open Page Rank 5+
1,446
74,817
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
3,050
886,770
India
2,171
429,293
Germany
1,724
322,762
United Kingdom
2,095
295,976
France
1,703
279,130
Brazil
1,355
273,285
Italy
1,470
251,088
Spain
1,560
202,979
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Aura | Bootstrap |
|---|---|---|
| LCP | 2.2 s | 1.8 s |
| INP | 100 ms | 75 ms |
| CLS | 0.05 | 0 |
| TTFB | 800 ms | 800 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.
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 |