How can I skip on the fly static files like images or documents that I don’t need while cloning a remote subversion repository?
I guess, that mean checkout when say 'clone'?
If you have all unwanted files in one directory, you can use sparse checkout (http://svnbook.red-bean.com/en/1.7/svn.advanced.sparsedirs.html).
But if unwanted files scattered around repository, then... I don't think it is possible