
It is recommended that you clear your browser cache every few weeks to keep it running efficiently. The downside is that the information on a website may have changed while your browser loads an older version. This can decrease the time it takes to load a webpage. By keeping a local copy of some website information, your browser will be able to load at least some information from each page you have visited without downloading that information again from the server. “Browser cache or temporary Internet files are a way that browsers download website images, data, and documents for faster viewing in the future.

Here’s a thorough explanation from myFSU: As mentioned, the caches of any websites you’ve deleted are still around and taking up space.
