Google Publisher Tag vs SpotX
Head-to-head usage across the sites we track.
Top sites by authority
Google Publisher Tag · SpotX · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
70
2
Open Page Rank 8+
1,185
8
Open Page Rank 7+
5,440
28
Open Page Rank 6+
10,495
56
Open Page Rank 5+
17,037
77
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Google Publisher Tag · SpotX · share of sites in each country using one or the other
United States
77,333
162
Canada
41,155
59
United Kingdom
40,696
47
India
32,440
56
Germany
31,191
29
France
29,042
31
Australia
27,204
34
Spain
26,508
27
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Google Publisher Tag | SpotX |
|---|---|---|
| LCP | 1.9 s | 1.9 s |
| INP | 100 ms | 125 ms |
| CLS | 0.05 | 0.1 |
| TTFB | 800 ms | 400 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.