Cloudflare Rocket Loader vs Zaraz
Head-to-head usage across the sites we track.
Detections for Zaraz end in Dec 2022. The fingerprint catalog behind our crawls no longer carries that technology as its own entry, usually because it was retired or split into more specific ones, so its figure is the last recorded and is not directly comparable with a currently tracked technology.
Top sites by authority
Cloudflare Rocket Loader · Zaraz · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Cloudflare Rocket Loader · Zaraz · share of sites in each country using one or the other
United States
30,747
80
India
20,411
47
United Kingdom
15,016
48
Saudi Arabia
14,825
24
Brazil
13,494
50
Germany
12,434
51
Canada
11,691
42
Indonesia
11,700
31
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Cloudflare Rocket Loader | Zaraz |
|---|---|---|
| LCP | 2.2 s | 2 s |
| INP | 100 ms | 100 ms |
| CLS | 0 | 0 |
| TTFB | 1000 ms | 800 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.