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+
74
1
Open Page Rank 8+
1,363
4
Open Page Rank 7+
6,859
17
Open Page Rank 6+
15,279
38
Open Page Rank 5+
30,040
60
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
356,639
241
India
185,990
153
Brazil
167,096
80
Indonesia
162,375
78
United Kingdom
139,708
174
Germany
103,876
127
Canada
103,033
145
France
97,867
118
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Cloudflare Browser Insights | Glassbox |
|---|---|---|
| LCP | 2.1 s | 1.9 s |
| INP | 75 ms | 125 ms |
| CLS | 0 | 0 |
| TTFB | 900 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.