I know redirect a website to mobile version such example.com to m.example.com is the best after responsive design but my question is while the desktop URL is example.com/index.aspx and want to redirect to mobile version example.com/index_m.aspx. or example.com/car.aspx to example.com/car_m.aspx. And html and css totally different with desktop version.


With a function i detect user-agent and want to redirect from example.com/gallery.aspx to example.com/gallery_m.aspx if device is mobile or etc.

The questions:

  1. Is this good method at all? or harmful for SEO or google index?
  2. If it's okay, which redirect i should use? 301 or 302
  3. Should i use canonical tag?
  • 1
    Actually responsive design is a setup where the server always sends the same HTML code to all devices and CSS is used to alter the rendering of the page on the device, thus redirection isn't required. If you're going to separate the URLs of your desktop and mobile sites, you'll need to provide a signal to Google with a <link> tag with rel="canonical" and rel="alternate" elements. 302 redirects are recommended for this purpose. – dan Jan 8 '18 at 5:14

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