The one I use/used is called "downloader for onlyfans.com" in the Chrome Webstore. The developer is/was @extension_dev on twitter. His last post on Twitter is from Oct. 25, 2020 and the extension was removed from the Chrome store. I have it installed on both of my laptops and it still works flawlessly, except for the new DRM material. If anybody knows a way to export an installed chrome plugin I could post it for you. I also have a new PC that I built that I would like to install it on lol. Currently I'm using the "Allow Right-Click" extension on Chrome which works just fine for both pictures and videos on OF (again, except for the new DRM content.)
I mean if the implementation of DRM regarding games and music are any indication, especially in regards to games, then the shit's getting cracked within a month and the only people who get fucked are the legit folks and customers who just wanna download so they can have it for themself in case things go tits up and the vids are deleted.
This is the biggest problem. I don't care if someone chooses to enable DRM, provided I can choose not to subscribe to that particular content provider.
The trial works but has a 4 MB limit and its $25 for the full thing.