Breinify vs Kiwi Sizing
Head-to-head usage across the sites we track.
Top sites by authority
Breinify · Kiwi Sizing · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
0
3
Open Page Rank 8+
0
4
Open Page Rank 7+
1
12
Open Page Rank 6+
1
23
Open Page Rank 5+
7
40
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Breinify · Kiwi Sizing · share of sites in each country using one or the other
United States
19
2,106
India
14
962
United Kingdom
12
952
Canada
15
787
Australia
8
688
Germany
8
620
France
7
590
Italy
6
490
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Breinify | Kiwi Sizing |
|---|---|---|
| LCP | 2.1 s | 1.7 s |
| INP | 162 ms | 100 ms |
| CLS | 0.05 | 0 |
| TTFB | 800 ms | 500 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.