What are some rules of thumb for converting GIF images to JPEG?
Converting GIF files to JPEG is a tricky business you are piling one set of limitations atop a quite different set, and the results can be awful. Certainly a JPEG made from a GIF will never be as good as a JPEG made from true 24-bit color data. But if what you’ve got is GIFs, and you need to save space, here are some hints for getting the best results. With care and a clean source image, it’s often possible to make a JPEG of quality equivalent to the GIF. This does not mean that the JPEG looks pixel-for-pixel identical to the GIF it won’t. Especially not on an 8-bit display, because the color quantization process used to display the JPEG probably won’t quite match the quantization process used to make the GIF from the original data (see “[8] What is color quantization?”). But remember that the GIF itself is not all that faithful to the full-color original, if you look at individual pixels. Looking at the overall image, a converted JPEG can look as good as its GIF source. Some people cl
