BySide vs MailChimp
Head-to-head usage across the sites we track.
Top sites by authority
BySide · MailChimp · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
1
59
Open Page Rank 8+
2
871
Open Page Rank 7+
7
3,844
Open Page Rank 6+
13
8,214
Open Page Rank 5+
18
15,705
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
BySide · MailChimp · share of sites in each country using one or the other
United States
27
142,004
United Kingdom
31
65,019
Canada
17
42,102
India
17
41,567
Australia
9
32,722
Germany
28
31,989
Italy
24
31,919
France
36
31,178
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | BySide | MailChimp |
|---|---|---|
| LCP | 2.5 s | 2 s |
| INP | 150 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 900 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.