Requires ImageMagick Installed https://imagemagick.org/script/download.php#windows

Simply change Quality to Wtv you prefer Then simply copy/paste "Image Compressor.bat" file inside any picture folder Select it and press Enter Annnd Wait ^w^

Has far has im aware even down to 50-60% Visual Quality remains pretty much the same And file size can be reduced by up to 80% Was Able to free a Full TB of space in a day using this ^w^