Chrome extension that allows HTML tables to be downloaded as CSVs (Now on firefox too! Link: https://github.com/arktiv/table-csv-firefox)
https://arktiv.site/extensions/
https://chrome.google.com/webstore/detail/download-table-as-csv/jgeonblahchgiadgojdjilffklaihalj
https://addons.mozilla.org/en-US/firefox/addon/download-table-as-csv/