CartStack vs OptiMonk
Head-to-head usage across the sites we track.
Top sites by authority
CartStack · OptiMonk · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
0
2
Open Page Rank 8+
4
19
Open Page Rank 7+
19
64
Open Page Rank 6+
30
135
Open Page Rank 5+
51
251
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
CartStack · OptiMonk · share of sites in each country using one or the other
United States
1,129
3,282
Brazil
2,932
438
Hungary
17
3,188
United Kingdom
141
1,365
India
149
1,154
Canada
236
959
Germany
69
1,029
Australia
100
808
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | CartStack | OptiMonk |
|---|---|---|
| LCP | 2 s | 1.7 s |
| INP | 100 ms | 100 ms |
| CLS | 0 | 0 |
| TTFB | 1000 ms | 700 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.