ConvertKit vs Klaviyo
Head-to-head usage across the sites we track.
Top sites by authority
ConvertKit · Klaviyo · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
5
20
Open Page Rank 8+
16
117
Open Page Rank 7+
83
471
Open Page Rank 6+
236
1,263
Open Page Rank 5+
427
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
ConvertKit · Klaviyo · share of sites in each country using one or the other
United States
4,325
94,628
United Kingdom
1,714
37,132
Canada
1,756
29,501
Australia
1,207
27,110
Germany
786
23,957
France
610
20,942
India
1,392
19,705
Spain
519
16,472
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | ConvertKit | Klaviyo |
|---|---|---|
| LCP | 1.9 s | 1.6 s |
| INP | 75 ms | 100 ms |
| CLS | 0 | 0 |
| TTFB | 900 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.
ConvertKit to Klaviyo
| Domain | When |
|---|---|
| thebuenavida.net | May 2026 |
| cinchandcharm.com | May 2026 |
| gatherroundhomeschool.com | Apr 2026 |
| thephirstory.com | Feb 2026 |
Klaviyo to ConvertKit
| Domain | When |
|---|---|
| thepastaqueen.cooking | May 2026 |