<i>&quot;I cannot imagine Photoshop [...] to be text based.&quot;</i><p>ImageMagick is amazing.  There are certainly tasks for which the interface is more awkward than Photoshop (or GIMP), but there are tasks for which the opposite is true.  For instance, I was easily able to write a script for &quot;take a screenshot, detect where the variably-sized error message box appears within it and crop to it&quot;.