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+
6
1
Open Page Rank 5+
9
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
25
185
Canada
20
76
India
20
74
United Kingdom
17
76
Germany
19
66
Italy
19
62
France
18
63
Netherlands
20
57
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | ESW | Flow |
|---|---|---|
| LCP | 2.2 s | 2 s |
| INP | 150 ms | 75 ms |
| CLS | 0.05 | 0 |
| TTFB | 1100 ms | 800 ms |
Median site's p75 values from the Chrome UX Report, Jun 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.