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Editorial Team
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Asked: 2026-05-22T02:28:43+00:00

I have seen many websites use a separate domain, or subdomain to serve javascript

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I have seen many websites use a separate domain, or subdomain to serve javascript and stylesheets to speed up site load time.
How do I go about implementing the same in my Rails 3 web app?

For example I want

<link href="/stylesheets/style.css?1304887417" media="screen" rel="stylesheet" type="text/css" />

to show as

<link href="http://images.domain.com/stylesheets/style.css?1304887417" media="screen" rel="stylesheet" type="text/css" />

I am using this tag to show the stylesheets: <%= stylesheet_link_tag 'style', :media => 'screen' %>

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1 Answer

  1. Editorial Team

    Supplying an absolute URL is the most direct way.

    <%= stylesheet_link_tag 'http://images.domain.com/stylesheets/style.css', :media => 'screen' %>

    I recommend writing your own view helper to help with this.

    Edit: Hey, I just learned something today. Check out http://api.rubyonrails.org/classes/ActionView/Helpers/AssetTagHelper.html under “Using asset hosts” for info on how to set up AssetTagHelper to call a CDN, even supporting the multiple server CDN case of assets1.example.com, assets2.example.com, etc.

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