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+
72
2
Open Page Rank 8+
1,186
8
Open Page Rank 7+
5,411
28
Open Page Rank 6+
10,428
56
Open Page Rank 5+
16,880
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
69,673
145
United Kingdom
36,190
46
Canada
35,821
61
India
28,780
50
Germany
27,542
27
France
24,581
23
Australia
24,114
29
Spain
23,313
25
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Google Publisher Tag | SpotX |
|---|---|---|
| LCP | 1.9 s | 1.7 s |
| INP | 100 ms | 100 ms |
| CLS | 0.05 | 0.1 |
| TTFB | 800 ms | 400 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.