Cloudflare redirect rules with dynamic expressions#

I wanted to ensure https://niche-museums.com/ would redirect to https://www.niche-museums.com/ - including any path - using Cloudflare.

I’ve solved this with page rules in the past, but this time I tried using a “redirect rule” instead.

Creating a redirect rule that only fires for hits to the niche-museums.com (as opposed to www.niche-museums.com) hostname was easy. The harder part was figuring out how to assemble the URL.

I eventually found the clues I needed in this Cloudflare blog post. The trick is to assemble a “dynamic” URL redirect using the concat() function in the Cloudflare expression language, described here.

1
concat("https://www.niche-museums.com", http.request.uri)

Here are the full configuration settings I used for my redirect rule: