Great add-on for scientists, researchers and writers. It detects the citations and in one click imports it into your library. REALLY TIME SAVING.

I like the add-on for allowing to conveniently add literature to the Citavi database.

Recently I encountered that the AddOn slows down a particular website: Threema Web (https://web.threema.ch).
Probably you should investigate the issue. Firefox prompts the user to "temporarily disable" the addon for this website. After doing that, Threema Web works again.

It is very good
这是我见过的最好的软件之一。