Template:Iffile
From Self-sufficiency
For use in templates that add images to categories (while having no effect in all other namespaces). Short for {{#ifeq:{{NAMESPACE}}|File|...}}.
For example, something like {{ifimage|[[Category:Some media only category]]}} might go in a template that's only supposed to categorize images. Of course, <includeonly> tags aren't needed since it won't affect templates. No type of category suppression (e.g. category= or |nocat) is needed on demo/example pages either.
