Block ALL Time-Wasting Websites & Custom URL Blocking When You're On the Clock. Custom URL Block Extension. By Shreyas Tallamraju.
WorkMode is a Google Chrome Extension that, when turned on, auto-blocks ALL social media and custom URLs & keywords from even appearing.
To activate, simply click on the gray/white 'W' icon on the top-right of the Chrome browser. This will toggle the icon to 'red', meaning it's activated. You can edit which URLs are blocked by right clicking on the icon and selecting 'Options'.