Google Chrome: 

https://clear-my-cache.com/windows/google-chrome.html 

Firefox:

https://clear-my-cache.com/windows/mozilla-firefox.html 

Opera:

https://clear-my-cache.com/windows/opera.html 

How do I clear my browser cache on a Mac?

Safari: 

https://clear-my-cache.com/apple-mac-os/safari.html 

Chrome: 

https://clear-my-cache.com/apple-mac-os/google-chrome.html 

Firefox:

https://clear-my-cache.com/apple-mac-os/mozilla-firefox.html