Optimizely vs VisiOpt
Head-to-head usage across the sites we track.
Top sites by authority
Optimizely · VisiOpt · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
32
0
Open Page Rank 8+
398
1
Open Page Rank 7+
1,140
1
Open Page Rank 6+
1,815
1
Open Page Rank 5+
2,633
1
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Optimizely · VisiOpt · share of sites in each country using one or the other
United States
25,713
23
Canada
6,439
4
India
5,059
4
United Kingdom
4,863
3
Australia
4,155
3
Germany
3,558
1
France
3,449
1
Spain
3,393
0
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Optimizely | VisiOpt |
|---|---|---|
| LCP | 1.9 s | 2.1 s |
| INP | 100 ms | 75 ms |
| CLS | 0.05 | 0 |
| TTFB | 800 ms | 700 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.