Internet Archive Saver
This userscript saves every visited page to the Internet Archive Wayback Machine (archive.org), if the page has not already been saved there within the last 30 days. This prevents duplicate saves (We don't want to spam the Internet Archive). Some sites are excluded by default (No need to archive google searches, for example). You can add more @exclude flags yourself.
INSTALL USER SCRIPT
bitbucket.org, github.com, gitlab.com: Convenient direct “raw” download links (leftmost file icon) to “Install” user scripts and user styles from file lists. This will also allow user css/js auto‐update, even if the script author has not set @downloadURL and @updateURL.