^{Originally posted by afvrbanac July 20, 2021}
Hello, novice user here with some basic questions. I'm using histolab to extract random tiles at different levels. Is it possible to automatically add a scale bar to these images?

Also, is the magnification of each level the original magnification divided by the downsample for the level? So for example, for a 40X image at level 0, if the downsample for level 2 was 16, the magnification would be 2.5X?