It’s a raster based graphics editor that’s available for Linux and Windows. Other raster editors include Microsoft Paint, Adobe Photoshop and Ulead PhotoImpact. A graphic produced by The Gimp is just a bunch of pixels on the screen. As a matter of fact, if you take a swipe across your screen with the eraser tool, you’ll be erasing a swath of pixels, whether it’s a shape, line, color or whatever. There are no properties, links or intelligence built into any particular graphical element. It’s also known as a bitmap.