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+
34
1
Open Page Rank 8+
279
3
Open Page Rank 7+
797
8
Open Page Rank 6+
1,327
11
Open Page Rank 5+
2,043
15
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
12,979
88
India
9,036
67
Brazil
6,685
39
France
5,788
34
Germany
5,447
74
United Kingdom
5,281
48
Spain
5,226
42
Japan
4,588
27
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Astro | Scully |
|---|---|---|
| LCP | 1.6 s | 2 s |
| INP | 75 ms | 100 ms |
| CLS | 0 | 0.05 |
| TTFB | 600 ms | 600 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.