Catfish allows you to switch on a downloadable PDF soft proof per storefront from the editor screen.
A Soft proof is a great way for a user to assess the file they are creating, but a watermark, and lower resolution prevents them printing it elsewhere.
Login to the storefront you would like to enable this on as a storefront administrator
Choose Catfish > Other > Editor Settings
Locate and tick the settings:
This will enable the DOWNLOAD PREVIEW button in the bottom right corner of the editor
By default there will be a watermark on the preview which is removable if you find
Remove 'Preview' from the text box and enter a single space (This means there is a character in the field but it is not visible) and save settings