1. Select the three vertical dots in the top right corner of the Chrome browser.
2. In the menu that appears, select Delete browsing data.
3. In the new window that appears, ensure that the time range is set to "All time" and that the bottom option, "Cached images and files," is checked.
(If you would also like to clear your cookies, make sure that "Cookies and other site data" is checked also.)
4. Select the Delete data option, and your cache will be cleared.