Both standard and run-length encoded Sun rasterfiles are supported. Xloadimage is copywritten material with a very loose copyright allowing unlimited modification and distribution if the copyright notices are left intact. Various portions are copywritten by various people, but all use a modification of the MIT copyright notice. Please check the source for complete copyright information. The intent is to keep the source free, not to stifle its distribution, so please write to me if you have any questions.
Images can come in a variety of aspect ratios.
Xloadimage cannot detect what aspect ratio the particular image being loaded has, nor the aspect ratio of the destination display, so images with differing aspect ratios from the destination display will appear distorted. The GIF format allows more than one image to be stored in a single GIF file, but xloadimage will only display the first. Only GIF87a format is supported. This will be confusing if you're one of those poor souls who has to use Sun's XView. Some window managers do not correctly handle window size requests.