I tend to have my screenshots set to the highest resolution when saving on my PlayStation 4.

However, when I upload to the screenshots area of this website, I don’t want the images to be that big — either in dimensions or file size.

This snippet is how I bulk convert those images ready for uploading. I use an Ubuntu 20.04 operating system when running this.

# Make sure ImageMagick is installed
sudo apt install imagemagick

# Run the command
mogrify -resize 1920x1080 -format jpg folder/*.png

You can change the widthxheight dimensions after the -resize flag for your own required size. As well as changing the required image format after the -format flag.