Cid Font F1 F2 F3 F4 Free Link Download ((full)) [SAFE]
The "F" stands for "Font". The number (F1, F2, F3) is just an index, meaning "the first missing font," "the second missing font," and so on. They are a fallback mechanism. For example, CIDFont+F1 could represent Arial, Times New Roman, Calibri, or any other font that is missing. This varies from document to document.
Fixing the CID Font Error: What It Means and How to Resolve It cid font f1 f2 f3 f4 free link download
In Adobe InDesign/Illustrator: They must choose in the export settings. The "F" stands for "Font"