Cloudflare Rocket Loader vs Zaraz
Head-to-head usage across the sites we track.
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 9+
15
0
Open Page Rank 8+
222
0
Open Page Rank 7+
969
0
Open Page Rank 6+
2,036
0
Open Page Rank 5+
3,773
0
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
35,506
95
India
23,560
54
United Kingdom
17,454
50
Saudi Arabia
17,113
24
Brazil
15,129
54
Germany
14,506
56
France
14,025
44
Indonesia
14,015
40
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Cloudflare Rocket Loader | Zaraz |
|---|---|---|
| LCP | 2.2 s | 2.1 s |
| INP | 75 ms | 100 ms |
| CLS | 0 | 0 |
| TTFB | 1000 ms | 900 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.