ImageMagick has also better default handling. For example, in a previous project, we were automatically resizing jpeg images. Surprisingly, some resulting images were blurry. After some investigation, we found that these images had been photoshopped and Photoshop was using a different sampling factor (one of the variables used in jpeg compression). ImageMagick automatically detected this sampling factor and reused the same, but Pillow was using a default sampling factor and was blurring the image.