To clear an Internet cache in Firefox, go to the Network tab in the Preferences menu, then click Clear Now. Although browsers go by different names, this method works for commonly used browsers.Continue Reading
Click on the Menu button represented by three horizontal lines in the upper right corner of the browser window. Click on Preferences.
Click the Advanced icon, then click on the Network tab.
Click the Clear Now button in the Cached Web Content section. Click the check box next to Override Automatic Cache Management to limit the amount of disk space the cache takes.