Convertcart vs Klaviyo
Head-to-head usage across the sites we track.
Top sites by authority
Convertcart · Klaviyo · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
0
20
Open Page Rank 8+
0
117
Open Page Rank 7+
0
471
Open Page Rank 6+
3
1,263
Open Page Rank 5+
12
3,084
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Convertcart · Klaviyo · share of sites in each country using one or the other
United States
277
94,628
United Kingdom
112
37,132
Canada
140
29,501
Australia
69
27,110
Germany
46
23,957
France
41
20,942
India
102
19,705
Spain
32
16,472
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Convertcart | Klaviyo |
|---|---|---|
| LCP | 1.9 s | 1.6 s |
| INP | 100 ms | 100 ms |
| CLS | 0.05 | 0 |
| TTFB | 600 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.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
Convertcart to Klaviyo
| Domain | When |
|---|---|
| loosegrowndiamond.com | Jul 2026 |
| mahaaction.org | Jun 2026 |
| paddockblade.co.uk | Apr 2026 |
Klaviyo to Convertcart
| Domain | When |
|---|---|
| storiesflooring.co.uk | Jan 2026 |