When you use your browser to look at a website for the first time, it stores information from the site in temporary files in its cache. When you go to the site again, your browser will load it from the cache copy rather than downloading it all over again from the Internet. This process aims to speed up your overall browsing experience. Website pages can contain many different elements -- if you load them up from the stored cache version, you'll have quicker load times. Caching files can have some disadvantages, however, and it sometimes makes sense to clear the cache.
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Clear browsing data.