FormAssembly vs Klaviyo Forms
Head-to-head usage across the sites we track.
Top sites by authority
FormAssembly · Klaviyo Forms · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
4
9
Open Page Rank 8+
36
40
Open Page Rank 7+
80
119
Open Page Rank 6+
120
325
Open Page Rank 5+
174
826
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
FormAssembly · Klaviyo Forms · share of sites in each country using one or the other
United States
497
13,638
United Kingdom
175
6,387
Canada
183
5,401
Germany
106
4,775
Australia
182
4,444
India
218
3,670
France
93
3,448
Italy
89
2,830
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | FormAssembly | Klaviyo Forms |
|---|---|---|
| LCP | 2.1 s | 1.7 s |
| INP | 75 ms | 100 ms |
| CLS | 0 | 0 |
| TTFB | 1000 ms | 500 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.