All third party tools are against the ToS.

As far as I'm aware damage parsers are the only third party tool where SE acknowledged their use and stated they won't actively hunt down people who use them. They will, however, punish you if they become aware you're using one; so if you are then keep it to yourself.

That's what's official. Unofficially there's really not anything SE can do about you using third party programs that don't provide visible evidence. Bots, for instance, are noticeable, but I'm guessing a zoom tool wouldn't be. If you're just quiet about it you'll probably be fine.