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+
3
0
Open Page Rank 8+
4
1
Open Page Rank 7+
12
1
Open Page Rank 6+
23
3
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
2,106
103
India
962
61
United Kingdom
952
69
Canada
787
67
Australia
688
63
Germany
620
38
France
590
34
Italy
490
28
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Kiwi Sizing | True Fit |
|---|---|---|
| LCP | 1.7 s | 1.9 s |
| INP | 100 ms | 150 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.