I've enjoyed great success with various archiving proxies, including https://github.com/internetarchive/warcprox#readme https://github.com/internetarchive/warcp

I've enjoyed great success with various archiving proxies, including https://github.com/internetarchive/warcprox#readme https://github.com/internetarchive/warcprox#readme and https://github.com/zaproxy/zaproxy#readme https://github.com/zaproxy/zaproxy#readme (which saves the content to an embedded database, and can be easier to work with than warc files). The benefit of those approaches over just save-as from the browser is that almost by definition the proxy will save all the components required to re-render the page, whereas save will only grab the parts it sees at that time. If it's a public page, you can submit the URL to the Internet Archive, and benefit both you and them