A Safari Web Archive (.webarchive) is a file format used by Apple's Safari web browser to save a complete webpage as a single file. This archive contains all the elements of the webpage, including the HTML structure, images, CSS stylesheets, JavaScript code, and other embedded resources. When you save a webpage as a web archive, Safari bundles all these components into a single file, making it easy to share or store the webpage for offline viewing. Unlike simply saving the HTML source code, a web archive preserves the visual appearance and functionality of the original webpage. This is particularly useful for archiving dynamic content or webpages that rely on external resources. The format is essentially a property list (plist) that contains the webpage's data. While primarily associated with Safari, other applications might be able to extract the contents of a webarchive file, though rendering the page perfectly as it appeared in Safari may not always be guaranteed.