A browser cache is a storage location on your computer where your web browser keeps copies of web pages, images, and other resources. When you visit a website, your browser saves these files so that it can load the page faster the next time you visit. This helps improve your browsing experience by reducing loading times and saving bandwidth. However, sometimes the cached files can become outdated or corrupted, leading to display issues on websites. In such cases, clearing the cache can help resolve these problems, allowing the browser to download the latest versions of the files from the internet.