: Links on Google result list with unnecessary parameters I have a website that uses .htaccess to turn the parameterized URLs into a folder pattern based URL For example : www.example.com?lang=de&cat=mycategory

@Welton855

The source of your problem can be in html or in javascript, and you cannot control the links that other people put on the net too.. And because he finds a page when making a request for it, it indexes it. I miss some information to give answer with code (using a CMS? Other rules in .htaccess, etc…), but here are some ways :


Write a permanent redirect in .htaccess to remove the query string,
but then beware of the redirect loop (/de/mycat ->
/index.php?lang=de&cat=mycat -> index.php)
Usually this kind of situation is managed by the CMS: everything
that is not a static file existing on disk goes to index.php file,
which will check for the correctness of url and send redirects if
needed.
You should also go to Google Webmaster Tools, and have a look where
they give crawling statistics. There is a page where you can tell
them what does which parameters in URL.
Use a robots.txt file to disallow Google/other bots from crawling and indexing some of your files.

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