For content on webpages that I want to keep I use this bookmarklet (http://pdf.fivefilters.org/simple-print/url.php http://pdf.fivefilters.org/simple-print/url.

For content on webpages that I want to keep I use this bookmarklet (http://pdf.fivefilters.org/simple-print/url.php http://pdf.fivefilters.org/simple-print/url.php) to save the page as a nicely formatted PDF then I save the PDF to my cloud drive for permanent storage / reference. I used to use macOS file metadata to also include the download location of the PDF to be able to go back to the source site, but found little use for that bit of file system metadata.