Facebook Pixel vs Glassbox
Head-to-head usage across the sites we track.
Top sites by authority
Facebook Pixel · Glassbox · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
126
1
Open Page Rank 8+
2,814
4
Open Page Rank 7+
13,269
17
Open Page Rank 6+
28,185
38
Open Page Rank 5+
53,088
60
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Facebook Pixel · Glassbox · share of sites in each country using one or the other
United States
611,008
241
Brazil
214,285
80
India
210,862
153
United Kingdom
192,259
174
Canada
157,641
145
Germany
136,373
127
Australia
132,758
98
Italy
126,077
113
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Facebook Pixel | Glassbox |
|---|---|---|
| LCP | 1.9 s | 1.9 s |
| INP | 75 ms | 125 ms |
| CLS | 0 | 0 |
| TTFB | 800 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.