EXTPOSE
Install as App icon

Install as App

Extension Actions

How to install Open in Chrome Web Store
CRX ID
ilbjnijjaidemeofigoeapbnnplenmaj
Description from extension meta

Turn the current web site into an installable app.

Image from store
Install as App
Description from store

This extension adds a button to automate creating a shortcut with the "Open in Window" option checked, essentially making it one click to turn a web page into an application in chrome/chromeos.