![]() When making any configuration changes, be sure to follow this: Quit FontForge. Please tell us us if you have any tips you want to share. You have many options for optimizing FontForge for your platform and workflow. Here are some tips and tricks for doing so. Then for ‘Element -> Font Info’ under ‘General’ setting ‘Em Size’ to 2048. FontForge can be fine-tuned in various ways. Opening the text font first with ‘File -> Open File’. FontForge assumes that the optical spacing is linear (so if you increase the separation between two glyphs by 3 em-units, then the optical spacing will also. You have misread my question: I am not trying to change the em size, but the Ascent and Descent values i.e., the em. If the font has a UPM of 1600 and each pixel is 100x100 units, then the nominal font size is 16 pixels (1600/100=16). At first the emoji font was much larger than the text font. change the em-size for a > CID-keyed font. Or, if you're going to the trouble of installing a font editor like FontForge to open up the font, you will need to measure a pixel and find out the UPM (units per em) of the font. ![]() fontforge should not crash and allow to change Em Size value. Then use whatever app you're using to display the font and increase the font by one pixel at a time until it suddenly has sharp edges as all the pixels in the font line up with the pixels on your screen. I tried to change 1000 to 1024 and fontforge crashed. If you feel you need more accuracy in TrueType you can change the em-size to 8096. This is the sum of the fonts ascent and descent. The nominal size will be at least that amount, but often will be a few pixels taller if the font includes letters with accents. The font file will be bigger, but more accurate. The units of the coordinate system are determined by the em-size of the font. How important to set em-size a power of two I just use one pixel -> 100 units and calculate em-size form there. The exported font still works fine it seems, but if you don't mind I want to ask how important are those errors: Non-standard em-size. ![]() First, count the total height of a capital letter like X, then add any additional pixels that hang below the baseline in lowercase letters like g or p. But when I'm exporting a TTF from FontForge I get several validation errors. Usually the easiest way to figure out the "nominal size" of a pixel font is by trial and error. "Nominal size" in that article is referring to the font size for a pixel font where the "pixels" in the font (they are actually vector outlines) line up perfectly with the pixels on your screen. woff versions make the em size always equal to the line height, which can always match the fonts original pixel height. ![]()
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