Priority Hints is the more common of the two in our index: it runs on 23,636 websites against 176 for Cloudflare Zaraz, and 99 sites use both. Counts come from real scans, not vendor claims.
Cloudflare Zaraz gives you complete control over third-party tools and services for your website, and allows you to offload them to Cloudflare’s edge, improving the speed and security of your website.
Priority Hints exposes a mechanism for developers to signal a relative priority for browsers to consider when fetching resources.
99 sites run both Cloudflare Zaraz and Priority Hints. That is 56% of the sites using Cloudflare Zaraz, the smaller of the two.
Want to know which one a particular site uses? Look it up and see its whole stack, or compare two sites side by side.