Optimizely vs Pretty Damn Quick
Head-to-head usage across the sites we track.
Top sites by authority
Optimizely · Pretty Damn Quick · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Optimizely · Pretty Damn Quick · share of sites in each country using one or the other
United States
25,713
125
Canada
6,439
90
India
5,059
71
United Kingdom
4,863
79
Australia
4,155
61
Germany
3,558
45
France
3,449
37
Spain
3,393
34
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Optimizely | Pretty Damn Quick |
|---|---|---|
| LCP | 1.9 s | 1.8 s |
| INP | 100 ms | 125 ms |
| CLS | 0.05 | 0 |
| TTFB | 800 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.
Pretty Damn Quick to Optimizely
| Domain | When |
|---|---|
| rembeauty.com | Sep 2026 |