What is the difference between the Image Manager and the Document Manager?

Both the Image Manager and Document Manager allow you to upload items to the File Manager from inside the WYSIWYG editor in various locations within Pressero's admin area. Both also allow you to access items in the File Manager's /webfiles folder for use in the WYSIWYG editor. The difference between them is what file types each manager processes.
Document manager for web-to-print editor Document Manager: The Document Manager processes the following file types: .doc, .docx, .indd, .pdf, .xls, .xlsx, .zip.
Image manager for web-to-print Image Manager: The Image Manager process the following file types: .gif, .jpg, .png.