Blueknow vs Kiwi Sizing
Head-to-head usage across the sites we track.
Top sites by authority
Blueknow · 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+
2
4
Open Page Rank 7+
14
12
Open Page Rank 6+
20
23
Open Page Rank 5+
24
40
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Blueknow · Kiwi Sizing · share of sites in each country using one or the other
United States
46
2,106
United Kingdom
44
952
India
23
962
Canada
28
787
Australia
17
688
Germany
43
620
France
49
590
Italy
61
490
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Blueknow | Kiwi Sizing |
|---|---|---|
| LCP | 2.1 s | 1.7 s |
| INP | 150 ms | 100 ms |
| CLS | 0 | 0 |
| TTFB | 900 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.