Astra vs Sydney
Head-to-head usage across the sites we track.
Top sites by authority
Astra · Sydney · 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+
312
0
Open Page Rank 7+
915
0
Open Page Rank 6+
1,690
0
Open Page Rank 5+
3,081
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 · Sydney · share of sites in each country using one or the other
United States
61,862
21
India
47,125
10
Spain
22,977
14
Brazil
19,843
11
France
19,758
11
Germany
19,508
20
United Kingdom
18,404
12
Indonesia
17,425
16
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Astra | Sydney |
|---|---|---|
| LCP | 2.5 s | 2 s |
| INP | 75 ms | 50 ms |
| CLS | 0 | 0 |
| TTFB | 1300 ms | 900 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.