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
36
Open Page Rank 8+
2
649
Open Page Rank 7+
7
2,698
Open Page Rank 6+
18
5,893
Open Page Rank 5+
29
12,351
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
250
215,676
India
86
110,602
Japan
199
82,773
Brazil
41
80,295
France
58
74,632
United Kingdom
88
72,179
Spain
47
67,753
Italy
48
63,679
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, 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.