Site Kit vs Siteimprove
Head-to-head usage across the sites we track.
Top sites by authority
Site Kit · Siteimprove · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
36
32
Open Page Rank 8+
649
368
Open Page Rank 7+
2,698
1,043
Open Page Rank 6+
5,893
1,684
Open Page Rank 5+
12,351
2,398
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Site Kit · Siteimprove · share of sites in each country using one or the other
United States
215,676
5,867
India
110,602
2,187
Japan
82,773
770
Brazil
80,295
843
France
74,632
1,092
United Kingdom
72,179
1,787
Spain
67,753
938
Italy
63,679
919
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Site Kit | Siteimprove |
|---|---|---|
| LCP | 2.4 s | 1.6 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 1300 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.
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 Siteimprove
| Domain | When |
|---|---|
| johnsoncontrols.es | Dec 2025 |
| hylandsestateweddings.co.uk | Dec 2025 |
Siteimprove to Site Kit
| Domain | When |
|---|---|
| cmlf.com | Jan 2026 |
| kruzey.com.au | Jan 2026 |