Rocket.Chat's white-labeling feature allows you to customize your workspace to sync with your organization's brand identity.
How to change your workspace logo in the servers list on the desktop app?
Go to Administration > Workspace > Settings > Assets. Upload your logo in SVG format to favicon (svg) input.
How to change your workspace logo in the servers list on the mobile app?
Navigate to Administration > Workspace > Settings > Assets. Upload a 512x512 variation of your logo in PNG format to the android-chrome 512x512 (png) input.