This script detect if you are using a tab or not, if not it unload unused tab using display:none and save your CPU Usage, this script reduce CPU Usage drastically because it unload flash, gif, everything that cause animation and eat up your CPU Usage.
I want to give permission for the WhatsApp tab to continue working normally. I can just put https://web.whatsapp.com/ and everything will work correctly or do I need to modify it another way?