Astro vs Scully
Head-to-head usage across the sites we track.
Top sites by authority
Astro · Scully · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
38
1
Open Page Rank 8+
321
3
Open Page Rank 7+
935
8
Open Page Rank 6+
1,553
11
Open Page Rank 5+
2,404
14
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Astro · Scully · share of sites in each country using one or the other
United States
15,117
75
India
9,729
49
Brazil
7,332
32
Germany
6,169
67
France
6,182
31
United Kingdom
5,927
41
Spain
5,688
31
Japan
4,935
22
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Astro | Scully |
|---|---|---|
| LCP | 1.5 s | 2 s |
| INP | 75 ms | 100 ms |
| CLS | 0 | 0.05 |
| TTFB | 500 ms | 600 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.