Duplicated content by Semrush (www.domain.com / domain.com / domain.com/ )

Hello!

Let's say that I have "domain.com". SEMRush says that I have duplicated content on the following sites:

• www.domain.com
• domain.com
• domain.com/

How can I fix that? Any rules to .htaccess?

There is for sure methods to solve it in .htaccess. Also there are other solutions for that.

You can find information on this thread on stackoverflow.

https://stackoverflow.com/questions/12050590/redirect-non-www-to-www-in-htaccess