Yup, that's exactly why I started to make it! It's a personal project (I'm not a company), and it is local only, meaning I don't have to pay any server fees and I can set all the features to be free!
If you would like, you can still donate to me (via the heart button at the bottom of the add-on page) but this will not unlock any new features and I intend to keep it this way.
Thank you for the kind review! There's always the possibility that for some websites it does not work, in that case feel free to report an issue and I will try to take a look, but if it all works for you that's great!!
