You can drag and drop files directly to the window or click 'File -> Open' to load an image. To select a region, click and drag on the image, release to finish. Then, you can choose what dimensions ...

These displays are used on Creality's Ender 3 v2 and other 3d printers, and the configuration files to support these displays is included in the Marlin firmware. One file they use is "9.ICO", which is ...