Mobile SEO Checklist
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Site Set Up
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Responsive Design
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Different URLs serving different mobile optimised content
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Dynamic serving URLs
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Technical
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Add a viewport meta tag
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Allow crawling of CSS, JavaScript, and images
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Consider HTML5 for animation and videos
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Mobile sitemap submitting in Google Webmaster Tools
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Check all mobile friendly redirects for 404 errors
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(Local sites) include name, address, phone number in meta data
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Disable non-mobile friendly popups and ads
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Content / Usability
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Page speed is less than 1 second
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Hide unnecessary elements from mobile view
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Content is visible without scrolling horizontally
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Most important page elements appear at the top of
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Videos are responsive
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Consider simple banners and promote mobile apps
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Image sizes are reduced to fast load time
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Pages are readable without zooming/pinching
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Clickable links are spaced out and easy to click
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Website does not use Flash
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Mobile links point to the correct mobile page
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Other
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Run mobile-friendly test :https://search.google.com/search-console/mobile-friendly
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Note that only non-mobile friendly pages on your site will be negatively affected in mobile search results
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Check that your mobile-friendly pages show a "mobile friendly" label in the mobile search results