Read on Twitter
the first one is youtube-dl which you can use to easily download video from youtube, facebook, and tons of other places. it's command line but it couldn't be easier to use https://github.com/ytdl-org/youtube-dl
twitter media downloader is a browser extension that adds a little button to your desktop browser for one-click downloads (also available on chrome) https://addons.mozilla.org/en-US/firefox/addon/tw-media-downloader/
with browser extension downthemall you can download all of the images or files on a webpage https://www.downthemall.org/
the archiver is a browser extension that allows one-click saving to archive dot vn and the wayback machine (archives are far preferable to screenshots for journalists) https://www.cathalmcnally.com/tools/the-archiver/
but we'll also take screenshots - fireshot is the king https://getfireshot.com/
lastly, singlefile lets you download an entire webpage and retain it as a html file https://github.com/gildas-lormeau/SingleFile
and stay safe! use a vpn or tor! use encryption (protonmail, standard notes, signal)!
i wrapped all of this up with some extra context in a post https://jasonwilson.media/18636/how-to-help-journalists-and-yourself-by-preserving-online-materials
