A Safari Web Archive is a single-file archive format used by Apple's Safari web browser to save complete web pages. Unlike simply saving the HTML source, a web archive encapsulates all the resources required to display the page correctly, including HTML, CSS, images, JavaScript, and other embedded content. This allows users to view the saved web page exactly as it appeared online, even when they are offline or the original website is no longer available. The format essentially bundles all the necessary files into a single file, making it convenient for archiving and sharing web content. Web archives are particularly useful for preserving dynamic web pages or pages with complex layouts that rely on external resources. However, the webarchive format is primarily associated with Safari and may not be natively supported by other browsers, although tools and extensions exist to open them in other browsers as well.