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+
3
1
Open Page Rank 8+
4
7
Open Page Rank 7+
12
30
Open Page Rank 6+
23
67
Open Page Rank 5+
38
151
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
2,036
838
United Kingdom
925
688
India
947
504
Canada
768
541
Germany
594
558
France
571
566
Australia
645
408
Italy
507
443
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 | 500 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.