This video is worth watching if you have an online shop and need to understand how to manage different ecommerce product variations on your website.
If you are an online shop owner and you have certain products in different colors or different sizes, you could end up producing a lot of duplicate content because some CMS systems will just generate a new URL for that version. What I mean is, if you have a product in red and you have it in blue and you have it in yellow, then you could end up that your CMS system is basically producing a new URL for every version, but actually inside of the content it's just the color that is different.
For Google that's basically internal duplicate content, because this little content change is too less for Google to say "Okay, this has got a certain value.
So, what can you do? There is one version if you say "Okay, these color versions are really important for me because I know that users are really searching for the red one or the blue one or the yellow one." Then what you could do is write unique content, write high quality content for every version. Then it would be okay to have separate URL for every product. If you really give a lot of value and you really talk about the great colors of the products, then you have a different URL for every color version.
It could also be the same with different sizes. With the sizes I think it's a little harder to do it, but you could also decide "Okay, people are just looking for that kind of size, that's why I'm going to put in a lot of unique content and make it content rich like that." If that doesn't make any sense or if you say it doesn't really make a difference, if it's red, blue, green, or it's two inch, three inch, whatever, then what you should do if your CMS is producing duplicate content you should implement a canonical tag.
What you can do with the canonical tag is basically you can define one version so you could say "Okay, the blue version is my main version and I am setting a canonical tag on all the other versions." That means all the power from the links that are coming from outside and also you avoiding the duplicate content issues, all the power will go to that version, to that blue version. Of course we can do that also with different sizes. By implementing a canonical tag on one page and putting on the other ones basically the canonical tag saying "Okay, the blue one is the one I want the value to be going to," that would be okay. It won't be internal duplicate content anymore and Google would know "Okay, you want that URL to rank." Like that, you could avoid that situation.
If you're a shop owner that would be quite important for...
Read More at https://www.youtube.com/watch?v=MrV_LECwqps