CartStack vs PushOwl Web Push Notifications
Head-to-head usage across the sites we track.
Top sites by authority
CartStack · PushOwl Web Push Notifications · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
0
1
Open Page Rank 8+
3
3
Open Page Rank 7+
18
6
Open Page Rank 6+
28
18
Open Page Rank 5+
48
46
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
CartStack · PushOwl Web Push Notifications · share of sites in each country using one or the other
Brazil
3,313
164
United States
1,254
1,237
United Kingdom
168
723
Canada
253
610
India
163
631
Australia
115
477
Germany
71
472
France
73
403
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | CartStack | PushOwl Web Push Notifications |
|---|---|---|
| LCP | 2 s | 1.8 s |
| INP | 100 ms | 100 ms |
| CLS | 0.05 | 0 |
| TTFB | 1000 ms | 500 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.
All CartStack sites · All PushOwl Web Push Notifications sites