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Understanding Mobile Finder: Analyzing Google's SEO Suggestions and Mobile Content Variations

Mobile Finder, developed by Monica Yarbrough, leverages Google's SEO suggestions to enhance the identification of mobile web pages. It analyzes both desktop and mobile user agents, employing techniques like HTTP headers and media queries to ensure accurate content delivery. With tools like PhantomJS, this service evaluates the mobile presence of URLs, revealing insights into common pitfalls and limitations faced by web developers. Despite achieving a high accuracy of 96%, it still highlights the inconsistency in following Google's standards for mobile web design, emphasizing the ongoing challenges in mobile accessibility.

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Understanding Mobile Finder: Analyzing Google's SEO Suggestions and Mobile Content Variations

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  1. Mobile Finder By Monica Yarbrough

  2. Google’s Suggestions for SEO • Vary HTTP Header • Annotations within the HTML: • On desktop page: • <link rel=“alternate” media=“only screen and (max-width: 640px)” href=“http://m.example.com/page-1” > • On mobile page: • <link rel=“canonical” href=“http://www.example.com/page-1” > • Media queries https://developers.google.com/webmasters/smartphone-sites/

  3. How Mobile Finder Works • Use both desktop and mobile useragents • Look for: • Redirect • Different content • Different stylesheets • Media queries

  4. How Mobile Finder Works • Change the url to fit common mobile url patterns ex: www.t-mobile.comm.t-mobile.com

  5. PhantomJs • Headless WebKit (browser) • Well-known and widely used • Used to get the content of a page • Takes snapshots of the sites it visits • Scriptable with coffeescript or javascript

  6. Web Service • Query string with 2 parameters • url (required) • useragent(optional) • http://cs.harding.edu/mobilefinder/service.php?url=URL&useragent=USER_AGENT • Default useragent = Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_1 like Mac OS X; en-us) AppleWebKit/532.9 (KHTML, like Gecko) Version/4.0.5 Mobile/8B117 Safari/6531.22.7 (compatible; mediaqueries/1.0; +http://cs.harding.edu)

  7. Results <MobileFinder> <url>http://www.cnn.com/</url> <mobileUrl>http://www.cnn.com/</mobileUrl> <reason> <code>400</code> <message>differing content</message> </reason> <useragent> Mozilla/5.0 (Android; Linux armv7l; rv:9.0) Gecko/20111216 Firefox/9.0 Fennec/9.0</useragent> <timeAccessed>2013-07-20 15:23:42</timeAccessed> <error/> <MobileFinder/>

  8. Limitations • Crashing • Inconsistent results • Problems executing javascript redirection • Falsely fails when it actually gets the content • Fails to get url of page accessed • Slow

  9. Limitations • Client-side Redirects www.golferen.no/wip4/(right) www.ng.kz/ (below)

  10. Analysis Results • Accuracy (of 100 random hand-checked results) • 96 % accurate overall • 1 % inaccurately record not found when there is in fact a mobile version • 3 % inaccurately say mobile found when there is not a mobile version

  11. Nytimes desktop vs mobile

  12. Rakuten.co.jp desktop vsmobile

  13. Are Google’s Suggestions Used • 28 % found a mobile version following Google’s suggestions • 85 % found as having some sort of mobile version

  14. Are Google’s Suggestions Used • 28 % found following Google’s suggestions • Of the 82% that were found as not following the rules: • 93% missing vary HTTP header • 89% missing alternate and canonical links

  15. Are Google’s Suggestions Used • 28 % found following Google’s suggestions • 85 % found as having some sort of mobile version • Redirect: 35% • ‘Significantly’ different content: 28% • Stylesheetsalone: 9% • Stylesheetsand media queries: 11% • Media queries alone: 6% • Differing urls (trial and error): 11%

  16. End Result • As a whole, mobile web pages do not adhere to Google’s standards • There are no truly consistent ways for finding a mobile version of a site

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