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
39
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
45
2,036
India
26
947
United Kingdom
42
925
Canada
28
768
Australia
17
645
Germany
47
594
France
49
571
Italy
63
507
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Blueknow | Kiwi Sizing |
|---|---|---|
| LCP | 2.2 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, Sep 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.