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First edition of #AskSearchQuality India - How Does Google Handles Duplicate Content?

Both small and large websites often face issues regarding duplicate content. Googlebot is smart enough to choose among a cluster of URL's all having the same content based on the amount of content and popularity of that URL. However, to make things easier for Googleblot, it is recommended to either use rel=canonical tag or URL parameters to let Google understand the preferred version of URL that you will like to get ranked.

Google in this effort brought us the first video response to the #AskSearchQuality campaign, exclusively for our Indian webmasters. Answers are given by Ashish Kalsi.

This video answers the most voted questions on canonicalization and handling dynamic parameters. 

Using a Canonical URL

You can use a canonical URL to specify the preferred version of URL having the same content. For this, you need to add a rel=canonical tag on every page present in the duplicate cluster of URL's. Mark up the canonical page and any other variants with a rel="canonical" link element.
Add a <link> element with the attribute rel="canonical" to the <head> section of these pages:

<link rel="canonical" href="" />

This indicates the preferred URL to use to access the yellow shoes post, so that the search
 results will be more likely to show users that URL structure.

(Please Note: There is no guarantee that Google will always display the preferred URL.)

Also See: Mistakes to Avoid When Using Rel=canonical

Using URL Parameters

URL parameters fall under 2 categories:

Active parameters - Pages whose content gets altered in some way or the other. Some examples of active parameters include sorting by brand, gender, country or order.

Passive parameters - Pages whose content remains the same. Some dynamic URL's pointing to the same content are given below:

See More: 5 Ways to Fix Duplicate Content Issue

Watch the Full Video Here: AkSearchQuality India - Duplicate content

Also See:

Learn Seo - Easy Seo Tutorial
Navigation in Seo
Google Tag Manager