Astra vs UpSolution Zephyr
Head-to-head usage across the sites we track.
Top sites by authority
Astra · UpSolution Zephyr · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
21
0
Open Page Rank 8+
298
0
Open Page Rank 7+
889
0
Open Page Rank 6+
1,677
0
Open Page Rank 5+
3,030
0
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Astra · UpSolution Zephyr · share of sites in each country using one or the other
United States
54,700
12
India
40,848
7
Spain
19,785
5
Brazil
17,822
5
Germany
17,658
4
France
16,604
6
United Kingdom
16,239
6
Indonesia
14,649
4
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Astra | UpSolution Zephyr |
|---|---|---|
| LCP | 2.4 s | 2.5 s |
| INP | 75 ms | 50 ms |
| CLS | 0 | 0 |
| TTFB | 1300 ms | 1400 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.