File size said here is 56 https://download.gimp.org/pub/gimp/v2.8/osx/ gimp-2.8.20-x86_64.dmg 05-Feb-2017 19:56 56M But the dmg file I got is 58.8 MB. I have heard that could be bad sign? Or is this normal? Also, is is safer to use site's own download over their mirrors? Like said here: https://www.gimp.org/downloads/ The download links above will attempt to download GIMP from one of our trusted mirror servers. If the mirrors do not work or you would rather download directly from our server, you can get the direct download here.