Everything on internet is intrisically ephemeral. Embrace that instead of fighting against it. If you want to archive stuff then make offline copies. PDF/A (esp

Everything on internet is intrisically ephemeral. Embrace that instead of fighting against it. If you want to archive stuff then make offline copies. PDF/A (especially the -1 and -2 versions) is format explicitly designed for archiving and works well for static content. I think it is bit of a shame that mirroring is not more readily built into web stack (=http/html); if you could trivially make links that included local copy (as fallback?) this linkrot would be far lesser concern. The way how for example wikipedia links everything through archive.org is bit of a hack imho