How to remove Alt.Center from Chrome browser:
1) Click on the three horizontal lines icon in the upper righthand corner of your Chrome browser.
2) Go to "Settings".
3) In the menu that appears click on "Extensions".
4) From the list of installed Extensions, find the name "Alt.Center".
5) Click on the trash can icon to the right of "Enable" (for the extension you wish to uninstall - Alt.Center).
6) Our extension should be removed from your Chrome browser.