We use the terminal every day to perform repetitive tasks more quickly. Here are the commands we use.
Resize for web
Resizes all images contained in the current folder with a certain extension
*.jpg to a certain width
-resize 1600 with a certain quality
-quality 75 in a folder named "web"
-path web. The folder must be created before running the command.
mogrify -resize 1600 -quality 75 -path web *.jpg