Board Thread:Support Requests - Getting Technical/@comment-13028537-20150331095030/@comment-1277243-20150504182248

If you have DPL installed on your wiki, you can create a template, such as Template:NUMBEROFIMAGES with the contents:

namespace=File titleregexp=\.(png|gif|jpg|jpeg|ico|svg)$ format=,,, resultsheader=%TOTALPAGES% noresultsheader=0 ignorecase=true

to show only the number of images. If you don't have DPL installed, you just need to use Special:Contact and request it.