This Webarchive Viewer allows you to view a Webarchive file without having Apple Mac, Safari installed on the machine. You can easily convert your Webarchive (Apple, Safari) files to PDF/Zipped HTML with this tool.
This app makes viewing Webarchive file quick and easy.
This also provides Webarchive to HTML format conveting. You can download the extracted HTML files. 
You can open a Webarchive file to view from your computer or your Google Drive.

The webarchive file format is available on macOS and Windows for saving and reviewing complete web pages using the Safari web browser. The webarchive format differs from a standalone HTML file because it also saves linked files such as images, CSS, and JavaScript.