I was looking a few labels I did with the original manual embossing machine, and right before it broke it started advancing the tape less than needed.

It created a "condensed" effect. Maybe it is a nice feature, both aesthetically and functionally, to be able to place more or less characters in the same space.

There could be a dropdown menu in the web app for that. The default could be as it is right now, and the other option would be the "condensed".