While in Google Chrome click the 3 vertical dot menu at the top of your browser's window.
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Click the option to "Delete browsing data." (you may need to click the "More tools" option to see this menu option appear). Alternatively, press the keys Ctrl + Shift + Delete altogether to open the Browser Data Management area.
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At the top of the window, set the time range to "All time."
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Check the box next to "Cached images and files,". If you want to clear your browser cookies and have it log you out of every website, check the cookies option as well. If you prefer to stay logged in, only check the images and files option.
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Click "Delete data."
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Then close and reopen your browser.