Kiwi Sizing vs True Fit
Head-to-head usage across the sites we track.
Top sites by authority
Kiwi Sizing · True Fit · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
4
1
Open Page Rank 8+
6
2
Open Page Rank 7+
14
2
Open Page Rank 6+
24
4
Open Page Rank 5+
40
13
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 · True Fit · share of sites in each country using one or the other
United States
2,456
122
United Kingdom
1,161
86
India
1,134
67
Canada
927
79
Australia
765
78
Germany
735
51
France
712
46
Italy
547
38
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Kiwi Sizing | True Fit |
|---|---|---|
| LCP | 1.7 s | 2.1 s |
| INP | 100 ms | 125 ms |
| CLS | 0 | 0.05 |
| 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.