URL Routing in Umbraco, how to redirect your website hostname in Umbraco from https://example.com to https://www.example.com.

By default, Umbraco listens to both http://example.com and http://www.example.com. This is not good for your Google ranking and SEO, since this will be seen as duplicate content. Fortunately, it is pretty easy to redirect your website to it’s www variant. Here is how to accomplish this.

URL Routing in Umbraco: how Umbraco uses rewrites

Umbraco uses it’s own MVC URLRewrite module. Therefore, you can’t use IIS URLRewrite (web.config) to redirect the website to it’s www address.

Umbraco URLRewrite.config
To redirect your example.com domain to its www.example.com variant, you have to add a redirect to your Umbraco configuration file ~/Config/UrlRewrite.config. Simply add the following redirect:

<add name="domain_to_www"   

That’s it… Easy, huh? 🙂

Update 2018-10-30 about URLRewrite.config

@HotChilliCode mentioned on Twitter that: Since Umbraco version 7.6, the UrlRewriting dependency is removed and Umbraco no longer ships with it. Now you can use IIS URL Rewrite! You can read more about the changes in the Version Specific upgrades document: Version 7.6.0