Kiwi Sizing vs Reelevant
Head-to-head usage across the sites we track.
Top sites by authority
Kiwi Sizing · Reelevant · 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
0
Open Page Rank 7+
12
4
Open Page Rank 6+
23
6
Open Page Rank 5+
40
10
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 · Reelevant · share of sites in each country using one or the other
United States
2,106
21
India
962
15
United Kingdom
952
20
Canada
787
20
Australia
688
9
Germany
620
21
France
590
28
Italy
490
21
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Kiwi Sizing | Reelevant |
|---|---|---|
| LCP | 1.7 s | 1.6 s |
| INP | 100 ms | 125 ms |
| CLS | 0 | 0.05 |
| TTFB | 500 ms | 700 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.