Kiwi Sizing vs Usizy
Head-to-head usage across the sites we track.
Top sites by authority
Kiwi Sizing · Usizy · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
4
1
Open Page Rank 8+
6
1
Open Page Rank 7+
14
2
Open Page Rank 6+
24
2
Open Page Rank 5+
40
4
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Kiwi Sizing · Usizy · share of sites in each country using one or the other
United States
2,456
35
United Kingdom
1,161
33
India
1,134
19
Canada
927
18
Australia
765
19
Germany
735
33
France
712
35
Italy
547
29
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Kiwi Sizing | Usizy |
|---|---|---|
| LCP | 1.7 s | 1.7 s |
| INP | 100 ms | 125 ms |
| CLS | 0 | 0 |
| TTFB | 500 ms | 700 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.