Open Edge's menu by clicking on the three horizontal dots from the upper-right corner and go to Settings.
Find the Clear Browsing Data section and click on the Choose what to clear button.
Choose what to clear
Make sure that the Cached data and files box is ticked (along with all the other categories that you want cleaned) and press the Clear button.
Clear cache on Edge
Click on the three horizontal lines from top-right area and click on the Options button.
Go to the Privacy & Security section, then click on the Clear Data button from the Cookies and Site Data category.
Firefox Privacy and Security
Tick the box marked as Cached web content, then click on the Clear button.
Clear cache on Firefox
Click on the three vertical dots icon from top-right corner to open the main menu, then go to Settings.
In the new tab that opens up scroll down, access Chrome's Advanced settings and click on the Clear browsing data section.
Chrome Advanced settings
Check the Cached images and files box, then click on the Clear data button.
Clear cache on Chrome
Now that you know how to clear your browser's cache, I should also warn you that putting this knowledge into practice will only protect your privacy from inexperienced users. There are other more advanced ways of finding out what a person has been doing online, but we will talk about those another time. However, the question is why would you clear your entire cache and make people suspicious by clearing your entire Internet activity data instead of simply using the private browsing option whenever you don't want to leave any traces? Let us know in the comments below.