ImageMagick

Good Startup Tutorial

• https://www.youtube.com/watch?v=wjcBOoReYc0
• https://web.mit.edu/GRAPHICs/src/ImageMagick-6.0.6/www/Magick++/Documentation.html
• https://opensource.com/article/17/8/imagemagick

How to install on ubuntu

sudo apt install imagemagick

convert jpg to png

ls -1 *.jpg | xargs -n 1 bash -c 'convert "$0" "${0%.jpg}.png"'

Ref: https://linuxways.net/ubuntu/convert-png-to-jpeg-jpeg-to-png-using-the-command-line-in-ubuntu/