Clear Cache & Cookies In Chrome On your computer, open Chrome. At the top right, click More . Click More tools Clear browsing data. At the top, choose a time range. To delete everything, select All time. Next to "Cookies and other site data" and "Cached images and files," check the boxes. Click Clear data. Firefox Click the menu button and select Settings. Select the Privacy & Security panel. In the Cookies and Site Data section, click Clear Data…. Remove the check mark in front of Cookies and Site Data.For more information about managing site data, see Manage local site storage settings. With Cached Web Content check marked, click the Clear button. Close the about:preferences page. Any changes you've made will automatically be saved.