The "CID Font F1, F2, F3, F4" labels often appear as a technical byproduct when PDF files are created or exported from professional design software like Adobe InDesign or Illustrator. These labels are not the original font names but rather assigned by the PDF generator to identify specific font subsets . 🛠️ The Purpose of CID Encoding
Or: /CMap /UniCNS-UTF32-H
When you see , it means: "The font resource named F1, which is a CID-keyed font." cid font f1 f2 f3 f4
: If the font encoding is broken, you may be unable to use Ctrl+F to search for text. Recommended Solutions The "CID Font F1, F2, F3, F4" labels
This often "flattens" the font data and resolves rendering errors, making the file usable. : The "CID Font F1