I second GraphicsMagick over ImageMagick. In PHP found it performed especially well when executing through exec() rather than the extension. See Gifsicle [1] f

I second GraphicsMagick over ImageMagick. In PHP found it performed especially well when executing through exec() rather than the extension. See Gifsicle [1] for easy animated GIF resizing, which I found buggy in both IM and GM. [1] https://www.lcdf.org/gifsicle/ https://www.lcdf.org/gifsicle/