Duplicated content on subcategory pages: how do I fix it?

[uMoR]

Hello Everybody,
I manage an e-commerce website and we have a duplicated content issue for subcategory. The scenario is like this:

/category1/subcategory1
/category2/subcategory1
/category3/subcategory1

A single subcategory can fit multiple categories, so we have 3 different URL for the same subcategory with the same content (except of the navigation link).

Which are the best practice to avoid this issue?

Thank you!

[uMoR]

Thank you for answer

I didn't think about rel canonical, great advice!

[ersaky]

Hi uMoR,

You can use rel="canonical" tag. As your scenario above you should use this method described below.

First of all, you should decide which page is best related to your category or subcategory.

For example; Lets say that your best page is "/category1/subcategory1" and others have duplicated content. Then you should add html codes(rel="canonical" tag) to them.Lets add it;

"/category2/subcategory1" and  "/category3/subcategory1" pages html code:

<title>......</title>
......other tags.....
<link rel="<a class="attribute-value">canonical</a>" href="http://www.......com/category1/subcategory1" />

.........your content............

Good luck !