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
29,959
82
India
19,958
49
Saudi Arabia
15,432
20
United Kingdom
14,634
44
Brazil
13,122
50
Germany
11,955
52
Canada
11,512
43
Indonesia
11,371
31
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Cloudflare Rocket Loader | Zaraz |
|---|---|---|
| LCP | 2.1 s | 2 s |
| INP | 100 ms | 100 ms |
| CLS | 0 | 0 |
| TTFB | 1000 ms | 900 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.