Resize all the images in a folder using bash and imagemagick
$ git clone git@github.com:rehax/bulkImageResize.git
$ sudo apt install imagemagick
$ cd bulkImageResize
in whichever method you prefu, add the images you wish to resize in the "bulkImageResize" fokd
after you run the following commaands, all images will be converted, process cannot be undone
$ sudo chmod +x resize.sh
$ sudo ./resize.sh