$ sudo npm install imagemin-optipng
$ sudo npm install -g imagemin-optipng

If want to update the imagemin-optipng package execute the command as below,

$ sudo npm update imagemin-optipng

Update package globally,

$ npm install -g imagemin-optipng

Git clone:

$ sudo  git clone https://github.com/rektide/imagemin-optipng.git

$ sudo  npm install -g ./imagemin-optipng

imagemin-optipng@5.2.1 /usr/lib/node_modules/imagemin-optipng

How to remove imagemin-optipng package :

You can uninstall or remove this package from your node_modules run the command as below,

$ sudo npm uninstall imagemin-optipng

Basic Information of imagemin-optipng NPM Package: