ESW vs Flow
Head-to-head usage across the sites we track.
Top sites by authority
ESW · Flow · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 7+
2
0
Open Page Rank 6+
7
1
Open Page Rank 5+
10
1
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
ESW · Flow · share of sites in each country using one or the other
United States
26
152
United Kingdom
19
74
Canada
22
70
India
20
62
Germany
18
61
France
19
50
Italy
16
51
Netherlands
16
51
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | ESW | Flow |
|---|---|---|
| LCP | 2.1 s | 1.9 s |
| INP | 125 ms | 75 ms |
| CLS | 0.05 | 0 |
| TTFB | 1100 ms | 900 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.