Cloudflare Browser Insights vs Glassbox
Head-to-head usage across the sites we track.
Top sites by authority
Cloudflare Browser Insights · Glassbox · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
75
1
Open Page Rank 8+
1,437
3
Open Page Rank 7+
7,118
15
Open Page Rank 6+
15,743
36
Open Page Rank 5+
30,477
59
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Cloudflare Browser Insights · Glassbox · share of sites in each country using one or the other
United States
358,777
238
India
188,732
153
Brazil
165,894
82
Indonesia
159,635
78
United Kingdom
141,129
172
Canada
104,823
144
Germany
103,081
126
France
97,614
115
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Cloudflare Browser Insights | Glassbox |
|---|---|---|
| LCP | 2 s | 2 s |
| INP | 75 ms | 125 ms |
| CLS | 0 | 0 |
| TTFB | 900 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.