Cidfont F1 F2 F3 F4 F5 F6 Full |link| < 2026 Update >
You edited a text string that uses CIDFont+F2 , but your system does not have the original base font installed. The PDF viewer falls back to a different F-slot. Fix: Extract the embedded font using tools like pdftops (Xpdf suite): pdftops -fontdir ./extracted_fonts document.pdf
When discussing "CIDFonts" specifically, the technical depth lies in the dictionary. If you were to inspect the definition of F2 (assuming it is a CIDFont), you would see a registry and ordering entry: cidfont f1 f2 f3 f4 f5 f6 full