I am using FontLab Studio - I have two font files - a normal and a bold alternative. Here are the two fonts side-by-side:

enter image description here

When I export the normal and install it it looks just like i want it to - however bold text seems to be slightly taller - making the line shift down whenever I make it bold - for instance, here are the two side by side in an invisible table:

enter image description here

You can see this more clearly when put into a table and compared to how Calibri behaves:

enter image description here

What am I missing here to make the line height of these two variations the same?

To better show exactly what I mean, see this video: https://www.screencast.com/t/tDMt9lkwCZx

Here is a comparison of the Font Info:

Regular enter image description here enter image description here enter image description here enter image description here

Bold enter image description here enter image description here enter image description here enter image description here

  • Hey @WELZ - To better show what I mean, I have added another picture and video to the description.
    – William
    Nov 19, 2017 at 9:42
  • 1
    I’ve never used FontLab Studio, but presumably there is somewhere you can set the basic line height (or x height or something similar) for the font—does that setting have different values for the regular and the bold? @WELZ You’re comparing glyph size, rather than line/x height. Nov 19, 2017 at 12:09
  • For further information, could you please produce the font metrics file (AFM) for both font weights and tell me the values of the FontBBox line in both cases please?
    – Pepe Ochoa
    Nov 21, 2017 at 1:26
  • Wile you provided the DESIGN parameters, it would be interesting to check the CALCULATED parameters. In each font, you can click FIle > Export > Metrics, and generate the AFM, which is an ASCII (text) file. If you open it with Notepad, you can see the calculated FontBBox for the whole font.
    – Pepe Ochoa
    Nov 22, 2017 at 18:02
  • 1
    @PepeOchoa, aren't the "Font BBox" shown at the bottom of "Key dimensions" the calculated values?
    – Wolff
    Nov 22, 2017 at 18:26

1 Answer 1


Two things to check:

  1. In File > Font Info, compare all values under Metrics and Dimensions
  2. Do you export to .otf or .ttf? Does the problem persist with .ttf?

Let us know what you found there.

  • Hi @AAGD - I added some screenshots above with Font Info - both styles have the exact same values. I am exporting with .ttf - I actually just tried exporting with .otf though and the problem is fixed - so what is wrong with my ttf setup?
    – William
    Nov 22, 2017 at 10:52
  • I'm sorry, i'm not that experienced in this either, esp. on Win. Have you tried switching to "Calculate Values automatically" as recommended by the interface?
    – AAGD
    Nov 22, 2017 at 11:26

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