Complianz vs Optimizely
Head-to-head usage across the sites we track.
Top sites by authority
Complianz · Optimizely · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
13
31
Open Page Rank 8+
231
400
Open Page Rank 7+
844
1,147
Open Page Rank 6+
1,719
1,808
Open Page Rank 5+
3,575
2,607
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Complianz · Optimizely · share of sites in each country using one or the other
United States
21,357
28,637
Spain
46,026
3,659
France
41,901
4,064
Germany
41,520
3,936
Italy
33,445
3,347
United Kingdom
19,610
5,243
Netherlands
17,013
3,404
Canada
10,120
7,019
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Complianz | Optimizely |
|---|---|---|
| LCP | 2.3 s | 2 s |
| INP | 75 ms | 100 ms |
| CLS | 0 | 0.05 |
| TTFB | 1300 ms | 800 ms |
Median site's p75 values from the Chrome UX Report, Jun 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.
Optimizely to Complianz
| Domain | When |
|---|---|
| s-pankki.fi | Feb 2026 |