How to install the unpacked extension in Chrome After Purchase, Download The Zip File from "my downloads" tab in My account. Unzip the downloaded zip file in any folder. Goto "More Tools" Using Three Dots On The Top Right Corner in chrome. Then Go To "Extension". Turn On The " Developer Mode " , it'll pop button named "Load Unpacked" load that unpacked folder which have the file name "manifest" in it. Your extension will be installed. Now click on extension's icon and setup it accordingly. Thankyou For Choosing Robotgram!