In my survey, I have an option to upload an image. The question type is set as "image" in the XLS form.
However, participants in the survey can still upload PDF files. Is there a way that I can prevent PDFs from being uploaded?
Are you using the Web Designer or Connect? It looks like you can restrict file types with the web designer but not (at least according to this reply) with Connect.
Thanks @AndrewBowne. I am using Connect. Looks like I'm not able to do this at this time.