Go to an open or new window and click the 3 vertical dots in the top right corner

Select More Tools -> Developer Tools

Select the Network tab

Clear your Console by selecting the icon of a circle with a diagonal dash 🚫

From the Firefox menu, select Tools

Select Browser Tools

Select Web Developer Tools

Select the Network tab

Clear your Console, using the trashcan icon 🗑

From the Safari menu

Preferences

Select the Advanced Tab

Mark Show Develop Menu in menu bar

From the Menu bar select Develop

Select Show Web Inspector

Select the Network tab

Clear your Console, using the trashcan icon 🗑