SingleFileZ
Web Extension for Firefox/MS Edge and CLI tool
...This HTML file is also a valid ZIP file that contains the resources (images, fonts, stylesheets, and frames) of the saved page. This ZIP file can be unzipped on the filesystem in order, for example, to view the page in a browser that would not support pages saved with SingleFileZ. To open saved pages from the filesystem in a Chromium-based browser, SingleFileZ must be installed and the option "Allow access to file URLs" must be enabled in the details page of the extension. Otherwise, the browser must be started with the switch. ...