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+
34
40
Open Page Rank 7+
78
121
Open Page Rank 6+
118
328
Open Page Rank 5+
171
835
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
508
13,560
United Kingdom
172
6,252
Canada
185
5,387
Germany
101
4,757
Australia
170
4,383
India
206
3,554
France
87
3,396
Italy
91
2,890
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 | 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.