GrowingIO vs Site Kit
Head-to-head usage across the sites we track.
Top sites by authority
GrowingIO · Site Kit · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
0
38
Open Page Rank 8+
2
649
Open Page Rank 7+
6
2,684
Open Page Rank 6+
14
5,882
Open Page Rank 5+
23
12,397
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
GrowingIO · Site Kit · share of sites in each country using one or the other
United States
225
191,744
India
75
94,995
Japan
153
73,790
Brazil
36
71,181
United Kingdom
73
64,452
France
50
63,629
Spain
35
63,132
Italy
49
58,351
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | GrowingIO | Site Kit |
|---|---|---|
| LCP | 2.5 s | 2.4 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 800 ms | 1300 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.