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+
127
1
Open Page Rank 8+
2,804
3
Open Page Rank 7+
13,162
15
Open Page Rank 6+
27,893
36
Open Page Rank 5+
52,442
59
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
606,740
238
Brazil
212,674
82
India
209,979
153
United Kingdom
191,995
172
Canada
156,840
144
Germany
133,751
126
Italy
131,187
113
Australia
130,501
93
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Facebook Pixel | Glassbox |
|---|---|---|
| LCP | 1.9 s | 2 s |
| INP | 100 ms | 125 ms |
| CLS | 0 | 0 |
| TTFB | 800 ms | 700 ms |
Median site's p75 values from the Chrome UX Report, Sep 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.