You're getting closer, but...
This is Verdana, at rendered font size 44...

Also, the created .png files are WAY bigger than needed. What I mean is that there is a lot of unused blank area in the image. An empty row at the top, a lot of empty at the bottom, and lots of blank area to the right of the characters.
Really cool that you made an OSX version, I'm going load that up and take it for a test ride!