Safari:
Click the Safari drop-down menu and select Preferences.
Click the Advanced icon at the top and tick the box at the bottom for “Show Develop menu in menu bar.”
Select the Develop drop down menu and click Empty Caches.
There’s also a keyboard shortcut for emptying the cache in Safari: Command + Option + E. This shortcut automatically clears the Safari cache without you having to search for it.
Google Chrome
Here’s how to clear the browser cache for Google Chrome on a Mac:
Click on the three dots in the top-right corner of your Chrome browser window and select Settings.
On the left, choose Privacy and security and then select Clear browsing data.
Under Time range, choose how far back you want your data to be cleared. All time will clear all of your cached data.
Check the box for Cached images and files and then hit Clear data.
To clear your Mac Chrome cache more quickly, use the keyboard shortcut Command + Shift + Delete.
Firefox
Here’s how to clear the browser cache for Firefox on a Mac:
Choose History from the top menu bar and select Clear Recent History.
Under the Time range to clear, select Everything. Or choose another option to clear only recent cache files.
Tick the box for Cache and then click OK.
You can also use the Firefox keyboard shortcut Command + Shift + Delete to pull up the Clear All History menu.