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+
24
0
Open Page Rank 8+
291
0
Open Page Rank 7+
893
0
Open Page Rank 6+
1,674
0
Open Page Rank 5+
2,997
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
53,034
11
India
39,679
7
Spain
21,219
8
Germany
17,293
4
Brazil
16,961
6
France
16,546
5
United Kingdom
16,069
6
Indonesia
14,339
3
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Astra | UpSolution Zephyr |
|---|---|---|
| LCP | 2.5 s | 2.7 s |
| INP | 75 ms | 50 ms |
| CLS | 0 | 0 |
| TTFB | 1400 ms | 1500 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.