While CCleaner may occasionally find some large files that free up significant amounts space (like NVIDIA’s installation files, for example), much of what it cleans up are cache files, like the ones above, that will already be deleted automatically by the system anyway-and re-created as you build up the cache again. But these days, you don’t need that much free space on your computer- just enough that your computer can create new files as it needs them. Once upon a time, when hard drives were small and computers were slow, clearing out your hard drive might have made more of a difference in your computer’s speed. RELATED: How Much Free Space Should You Leave on Your Windows PC? CCleaner Isn’t a Great Solution for Cleaning Out Full Hard Drives But in general, if someone has access to your computer, you have far worse problems than them looking at your cache files. This is why browsers don’t save cache files when you browse in private browsing mode.

Someone with access to your computer could inspect your browser’s cache files to see what websites you’ve been visiting, just as they could look at your browser history. Of course, the cache can also be a privacy concern. That means that clearing your browser’s cache constantly is a bad idea for performance reasons-constantly emptying the cache means you lose the benefits of having one.

However, if you were to constantly clear your browser’s cache, it would have to re-download the same files over and over. Your web browser is constantly doing this with bits of different web pages, and it speeds up web page loading because your browser doesn’t have to download the same files over and over. When you navigate to a different page on our website, your browser doesn’t have to download the logo image all over again-it just loads the image from the browser’s local cache. For example, when you visit How-To Geek, your browser downloads the How-To Geek logo that we display at the top of the page. RELATED: Why Is My Browser Storing So Much Private Data?Ĭache files are bits of web pages-images, scripts, stylesheets, HTML files, and more-that your browser holds onto.

This is because CCleaner is set up to delete your browser’s cache files by default. However, this would actually slow your computer down in real use. You could use CCleaner constantly, running it every day with the default settings. Deleting Cache Files will Slow Down Your Browsing, and They’ll Just Come Back Later

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