Customily vs Kiwi Sizing
Head-to-head usage across the sites we track.
Top sites by authority
Customily · Kiwi Sizing · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
2
4
Open Page Rank 8+
9
6
Open Page Rank 7+
17
14
Open Page Rank 6+
25
24
Open Page Rank 5+
36
40
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Customily · Kiwi Sizing · share of sites in each country using one or the other
United States
518
2,456
United Kingdom
205
1,161
India
121
1,134
Canada
179
927
Australia
117
765
Germany
111
735
France
98
712
Italy
78
547
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Customily | Kiwi Sizing |
|---|---|---|
| LCP | 1.6 s | 1.7 s |
| INP | 100 ms | 100 ms |
| CLS | 0 | 0 |
| TTFB | 500 ms | 500 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.