: While one file's "F1" might be Arial Bold and its "F2" Arial Regular , another file might use "F1" for Tahoma or a completely different typeface.
No. CID-keyed fonts rely on an internal CIDFontName and an XUID (Extended Unique ID). Renaming a file does nothing. The PDF checks the font’s internal registry. cid font f1 f2 f3 f4 free download free
If you are using Adobe Acrobat Pro or Illustrator , you can manually replace the missing "CIDFont+F1" with a standard font like Arial , Helvetica , or Myriad Pro . Many users find these provide an exact or near-exact match. : While one file's "F1" might be Arial