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+
3
1
Open Page Rank 8+
4
1
Open Page Rank 7+
12
2
Open Page Rank 6+
23
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
2,106
34
United Kingdom
952
29
India
962
18
Canada
787
17
Australia
688
15
Germany
620
32
France
590
38
Italy
490
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 | 150 ms |
| CLS | 0 | 0 |
| TTFB | 500 ms | 650 ms |
Median site's p75 values from the Chrome UX Report, Aug 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.