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
56
Open Page Rank 8+
1
852
Open Page Rank 7+
6
3,776
Open Page Rank 6+
13
8,015
Open Page Rank 5+
19
15,311
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
28
140,200
United Kingdom
29
64,810
Canada
17
41,963
India
19
40,362
Italy
23
33,400
Netherlands
27
31,497
Australia
9
31,343
Spain
54
31,220
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | BySide | MailChimp |
|---|---|---|
| LCP | 2.3 s | 1.9 s |
| INP | 150 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 700 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.