FullContact vs Site Kit
Head-to-head usage across the sites we track.
Top sites by authority
FullContact · Site Kit · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
1
36
Open Page Rank 8+
9
649
Open Page Rank 7+
61
2,698
Open Page Rank 6+
85
5,893
Open Page Rank 5+
116
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
FullContact · Site Kit · share of sites in each country using one or the other
United States
347
215,676
India
218
110,602
Japan
63
82,773
Brazil
83
80,295
France
87
74,632
United Kingdom
148
72,179
Spain
77
67,753
Italy
66
63,679
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | FullContact | Site Kit |
|---|---|---|
| LCP | 2.1 s | 2.4 s |
| INP | 100 ms | 75 ms |
| CLS | 0.03 | 0 |
| TTFB | 700 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.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
Site Kit to FullContact
| Domain | When |
|---|---|
| xproevents.com | May 2026 |