####For Windows You can optimize images by running all_image_optimization.bat from \automation\images\ folder

all_image_optimization.bat -d -jtran -pout -pquant -optip -gsicle -svgo

Parameters:

• -d - default path to images' folder (you can pass your own path: all_image_optimization.bat D:\development\web\zeppelin\images -jtran) Required!
• -jtran - optimize JPEG images (suggested by Web Fundamentals)
• -pout - lossless PNG optimization
• -optip - lossless PNG optimization (suggested by Web Fundamentals)
• -pquant - lossy PNG optimization (suggested by Web Fundamentals)
• -gsicle - create and optimize GIF images (suggested by Web Fundamentals)
• -svgo - Nodejs-based tool for optimizing SVG vector graphics files (suggested by Web Fundamentals) (Nodejs required)

For -svgo intall Nodejs and then run command

[sudo] npm install -g svgo

You can use some of parameters. For example

all_image_optimization.bat -d -jtran -optip

Moreover, you can run the files separately jpegtran.bat, pngout.bat, optipng.bat, pngquant.bat, gifsicle.bat or svgo.bat which by default will optimize all images in /img/ folder and subfolder or pass a path to the folder.

jpegtran.bat 

Or

jpegtran.bat D:\development\web\zeppelin\images

####For MacOS and Linux

• Mac OS users available amazing tool - imageoptim. Thanks @raphaelsavina for link.

• The other option is this command line utility which is based on ImageOoptim.app and can be used in Linux and MacOS. I can be installed like this:

gem install image_optim

More information about installation and usage can be found on its website: https://github.com/toy/image_optim It uses almost the same utilities for the mentioned ones for Windows.

You can also run the files separately minify_css.bat (minify_css.sh) or minify_js.bat (minify_js.sh) You can use some of them.

For Windows:

minify_css.bat 
minify_css.bat D:\development\web\zeppelin\styles

For Linux or MacOS:

./minify_css.sh
./minify_css.sh ../../css

Note: When the folder is not specified, the default css and js folders will be used.

Also you can generate .min files only of main.css and scripts.js

minify_main_css.bat
minify_scripts_js.bat