"Uploading Documents" Bar Should Display Supported File Types

Hello-

I believe it would be much appreciated by Taxpayers if the "Upload Documents" bar could include a sentence displaying the supported file types.

I have included a line to the text body for your reference. 

Taxpayers can often be confused as to why their documents are not uploading. This is partially because they are attempting to upload .jpgs to TaxCaddy. I believe this would save our Support Team time, as well as our clients.

Thank you for your time and consideration,

-James S.