FirstImpression.io vs Google Publisher Tag
Head-to-head usage across the sites we track.
Top sites by authority
FirstImpression.io · Google Publisher Tag · 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
FirstImpression.io · Google Publisher Tag · share of sites in each country using one or the other
United States
99
69,673
United Kingdom
62
36,190
Canada
69
35,821
India
55
28,780
Germany
60
27,542
France
57
24,581
Australia
45
24,114
Spain
76
23,313
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | FirstImpression.io | Google Publisher Tag |
|---|---|---|
| LCP | 2.1 s | 1.9 s |
| INP | 175 ms | 100 ms |
| CLS | 0.05 | 0.05 |
| TTFB | 700 ms | 800 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.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
FirstImpression.io to Google Publisher Tag
| Domain | When |
|---|---|
| tecache.cl | Sep 2025 |
All FirstImpression.io sites · All Google Publisher Tag sites