Sumo Paint is a full-featured online image editing and drawing tool. Sumo Paint is an image editing and drawing app for desktop and iPad — and, it’s completely free. Sumo Paint is an incredibly versatile photo editor and painting application that works in a browser. Images can be opened and saved from your hard drive or onto the cloud. Sumo Paint has an active art community of more than 600,000 registered members and over 2 million images. The app is beginning to blur the lines between desktop applications like Photoshop and Gimp.