@Bawolff I know it's been a while, but I still want to thank you for creating this query. I've used it a couple of times already.
But one thing that bothers me is that many of the files are mainly used on user or talk pages - and this query counts all of that. I only want to query the times the file is used in an actual Wikipedia article.
Is it possible to change the query to take this into account?

OK, but is there a workaround or an external tool? Because I want to convert images to svg that are listed in these categories; but the problem is that there are many unnecessary images that no wiki uses. It would be really handy.

8 years later, is this finally possible?