In many cases, the "F" numbers correspond to different weights of a standard font family: Arial (Regular) or Times New Roman Arial (Bold) or Times New Roman (Bold) Usually Italic or Bold Italic versions of the same family 4. Force Font Embedding (For Creators) If you created the PDF and others can't see the fonts: Adobe Acrobat Pro Search for "Embed fonts" and select Embed missing fonts
Sometimes F1 might map to a Western font like Helvetica in a corrupt PDF. To discover exact substitution needs: cidfont f1 f2 f3 f4 f5 f6 install
Since "CIDFont F1" isn't a font you can buy, you cannot simply "install" it to fix the issue. Instead, you must use one of the following workarounds: 1. The "Print to PDF" or "Export" Trick In many cases, the "F" numbers correspond to