![]() When the font is used to set type, the em is scaled to the desired point size. In TrueType fonts, the UPM is by convention a power of two, generally set to 1024 or 2048. In an OpenType font, the UPM or em size is usually set at 1000 units. (Before the reboot, it didn't look like the fix worked. In digital type, the em is a digitally-defined amount of space. Then the Bookerly font is fine from the 2 books I tried (one is the font checker book from here, and another was a library book from Overdrive). fontforge should not crash and allow to change Em Size value. The only thing I had to do in addition is I did a reboot (I went to sleep mode, then held down power button until my Clara HD rebooted). I tried to change 1000 to 1024 and fontforge crashed. Oh my goodness! Been searching on and off over the past year to fix the Bookerly font and guess never came across the post from jackie-w! It works perfectly. The Bookerly-Bold variant is okay but Bookerly-BoldItalic shows a Panose weight of Demi and needs to be changed to Bold. Obviously I'm not presenting any new information, just trying to summarise jackie_w's and raghiid's info. You may chose to display it at various sizes, by default it will be displayed with the outline font rasterized on a 24 pixel em square. ![]() There is a portable version if anyone doesn't want to install another program. They present the same issue with bold italic text but again, the fix is a simple one in FontForge using jackie_w's instructions. I would like to add that another user in the Kindle sub has created a set of slightly modified Bookerly files, with font hints removed and em-size corrected from 1000 to 2048: jackie-w provides clear instructions as to how to change the panose weight here: The -Regular and -Italic files both have a panose weight of Medium, which is problematic according to jackie_w's explanation: "Instead of values Medium/Demi Kobo expects values of Book/Bold respectively." The -Bold and -BoldItalic files are fine, and do not need modification For postscript fonts this number is set by strong convention to be 1000, while in most TrueType fonts it will be 2048 (also a convention, but. So for anyone who is in my situation, to save them wading through many threads across the forum, a summary of the solution is as follows: The Ascent and Descent are (in this current definition) Macintosh concepts rather than PostScript, their sum, however, provides the size of the em-square and that is very much a postscript concept. This was with v1.000 and v1.020 of the font. I tried three or four different naming conventions, and had no luck with any of them. If you have made a global change to the font (like scaling it to a new em-size) then the results may not be appropriate. Hi all, I've been through this post and many others trying to find a solution for the Bookerly bold italic issue and in my case, the only one that worked was using FontForge to change the panose weight. FontForge will load its preferences from multiple places, and the last definition of any preference will win.
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