If you need to create a disc image, DMG Canvas is an application for Mac that will give it that personal flavour that will distinguish the windows that will appear after mounting a file of this kind. Use a graphic editor to create the background for the window. Adjust the size or set the position of the picture and dimensions manually. 737 Followers, 44 Following, 153 Posts - See Instagram photos and videos from DMG Canvas (@dmgcanvasneeds). UPDATE: DMG Canvas. The software that I use, and recommend, to build.dmg files is Araelium DMG Canvas, which has recently bumped to version 3.x (a paid upgrade, around $10). One of the new features is the possibility to automate the notarization process while building the.dmg itself. DMG Canvas helps you manage the content and appearance of disk image files using helpful templates. Choose your files, create your background image using hel. DMG Canvas lets you create and build disk images using the slick WYSIWYG designer. Simply drag and drop your files into place, add text, images, and change the background image for the mounted window, and you can even add stylized license agreements to.