Does ImageShack alter, compress, or watermark my files in any way?
For images and flash, absolutely not. ImageShack strives to be completely non-intrusive, which means that ImageShack will not alter your uploaded images or flash files in any way. ImageShack will not add watermarks to your image or flash files, nor will it compress the images or flash files that you upload (unless it is bigger than 1.5 megabytes or if you resized it yourself). However, ImageShack will strip out non-image data from your image files, if such data exists. Video files are optimized before they are uploaded.