Open Safari
Click Safari in the menu bar
Click Settings
Go to the Privacy tab
Click Manage Website Data
Click Remove All
Confirm by clicking Remove Now
Open Chrome
Click the three dots in the top-right corner
Click Delete Browsing Data
Choose a time range
Check Cookies and other site data
Check Cached images and files
Click Delete data
Open Firefox
Click the menu button
Click Settings
Click Privacy & Security
Scroll to Cookies and Site Data
Click Clear Data
Check Cookies and Site Data
Check Cached Web Content
Click Clear
Open Finder
Click Go in the menu bar
Click Go to Folder
Enter ~/Library/Caches
Delete the contents of the folders you want to clear
Restart your browser after clearing cache and cookies