Kiwi Sizing vs SalesFire
Head-to-head usage across the sites we track.
Top sites by authority
Kiwi Sizing · SalesFire · 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
2
Open Page Rank 7+
12
4
Open Page Rank 6+
23
11
Open Page Rank 5+
39
24
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 · SalesFire · share of sites in each country using one or the other
United Kingdom
925
2,071
United States
2,036
566
India
947
263
Canada
768
149
Germany
594
220
Australia
645
141
France
571
215
Spain
474
200
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Kiwi Sizing | SalesFire |
|---|---|---|
| LCP | 1.7 s | 1.6 s |
| INP | 100 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 500 ms | 700 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.