Kiwi Sizing vs Nosto
Head-to-head usage across the sites we track.
Top sites by authority
Kiwi Sizing · Nosto · 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
5
Open Page Rank 7+
14
29
Open Page Rank 6+
24
68
Open Page Rank 5+
40
150
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 · Nosto · share of sites in each country using one or the other
United States
2,456
962
United Kingdom
1,161
798
India
1,134
603
Canada
927
626
Germany
735
655
France
712
672
Australia
765
470
Spain
501
538
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Kiwi Sizing | Nosto |
|---|---|---|
| LCP | 1.7 s | 1.9 s |
| INP | 100 ms | 125 ms |
| CLS | 0 | 0 |
| TTFB | 500 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.