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
5
Open Page Rank 7+
12
29
Open Page Rank 6+
23
65
Open Page Rank 5+
40
149
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
2,106
844
United Kingdom
952
714
India
962
550
Canada
787
548
Germany
620
570
France
590
583
Australia
688
431
Spain
466
472
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, 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.