You are correct. I was going off my memory. They say [1] > To prevent fingerprinting based on screen dimensions, Tor Browser starts with a content window round

You are correct. I was going off my memory. They say [1] > To prevent fingerprinting based on screen dimensions, Tor Browser starts with a content window rounded to a multiple of 200px x 100px. The strategy here is to put all users in a couple of buckets to make it harder to single them out. Moreover, even if you resize your window, the browser tries to protect you > by adding margins to a browser window so that the window is as close as possible to the desired size while users are still in a couple of screen size buckets that prevent singling them out with the help of screen dimensions. [1] https://tb-manual.torproject.org/anti-fingerprinting/#letterboxing https://tb-manual.torproject.org/anti-fingerprinting/#letter...