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+
1,341
4
Open Page Rank 7+
6,786
17
Open Page Rank 6+
15,099
38
Open Page Rank 5+
29,808
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
382,567
257
India
200,487
174
Brazil
176,969
93
Indonesia
173,937
97
United Kingdom
152,644
199
Canada
115,246
162
Germany
112,728
147
France
111,509
134
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Cloudflare Browser Insights | Glassbox |
|---|---|---|
| LCP | 2.1 s | 2 s |
| INP | 75 ms | 100 ms |
| CLS | 0 | 0 |
| TTFB | 900 ms | 700 ms |
Median site's p75 values from the Chrome UX Report, Jun 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.