>>1089413>>1089414>>1089471>>1089417https://www.gimp.org/downloads/set export quality to 80-90%. you can save your custom export settings in the same dialog. when you install gimp for the first time, the default export settings are set to PNG. change the file extenson to JPG. and save it.
gimp is a bit "special", sometimes you will hate it.
I guess gimp will also fix the roation during the export process.
video tutorial
https://www.youtube.com/watch?v=7iTmGr9YDVw 