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+
38
33
Open Page Rank 8+
649
368
Open Page Rank 7+
2,684
1,029
Open Page Rank 6+
5,882
1,637
Open Page Rank 5+
12,397
2,321
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
191,744
5,192
India
94,995
1,894
Japan
73,790
628
Brazil
71,181
765
United Kingdom
64,452
1,583
France
63,629
817
Spain
63,132
815
Italy
58,351
789
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Site Kit | Siteimprove |
|---|---|---|
| LCP | 2.4 s | 1.5 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 1300 ms | 600 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.
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 |
|---|---|
| usdahomes.com | Jun 2026 |
| johnsoncontrols.es | Dec 2025 |
| hylandsestateweddings.co.uk | Dec 2025 |
Siteimprove to Site Kit
| Domain | When |
|---|---|
| cmlf.com | Jan 2026 |
| kruzey.com.au | Jan 2026 |