Remove padding on fonts in designer

Hello, Ive tried to remove the spacing/padding up and down on my fonts in custom product designer.

I can adjust the padding on fonts thats in the theme but that does not affect the fonts I choose in my designer tool.

When I have this padding/spacing the measurements are giving wrong information, for example when the designer says the text is 30cm height, its actually not, Because its counting the space as text (I guess).

Anyone how I can adjust this on all the fonts I upload to the designer?