Very cool concept that I was super excited for when I found out about it, since I've used web reader extensions like this with other languages with great success. But the dictionary seems super limited! I wish it'd pull from SignASL or some larger dictionary, but I understand why that may not be feasible copyright-wise. The extension settings page is also needlessly complicated and requires you to login every time. It also seems like it's trying to implement it's learning material with in? But there does not seem to be a visible back button? I don't know. The settings page is very confusing, maybe worth looking into revamping.

I was very excited to find this, but as it is now, it's not very helpful and kind of cumbersome. I will be keeping an eye on it though, as I love the idea and want to see it succeed.

I love this add-on!