How to permit or forbid file type uploads in DW?

[jefferis]

the ancient DW  used to have a setting within each site to allow or disallow images like png or pdf uploads.   I can't find it in the current settings. I have an old website that I'm restoring that had previously blocked png uploads (the file has a red bar through it) . I can't find a setting to allow pngs to be uploaded during file transfers.    Please help. 

[BenPleysier]

See https://helpx.adobe.com/dreamweaver/using/cloaking-files-folders-dreamweaver-site.html

[Nancy OShea]

It's called File Cloaking.

Right-click on a file in your Files panel (F8).  Select Cloaking.