Exactly what I've been looking for in a reverse image search add-on. My only issue is that Google wasn't working, but that can be fixed by manually replacing the "Search Variables (One per Line)" section with:

sbisrc=cr_1_5_2
image_url=::$URL::

Google image search doesn't work for a long time now.

Google Search option does not work as of right now

Fixed Google search without awful Google lens:

Search url- https://www.google.com/searchbyimage
Variables-
sbisrc=cr_1_5_2
image_url=::$URL::

other checkbox empty

Got idea from "Search by image" git

please fix the google image search option. it does not work at all

it has been 4 years, please update