: Modern OpenType fonts often get converted into CID encoding when they are embedded into a PDF to ensure all characters display correctly. Decoding "F1, F2, F3, F4"
is a font encoding technology developed by Adobe to support large and complex character sets. Unlike standard Western fonts (which typically support about 256 characters), CID fonts can handle up to 65,535 separate characters . This makes them essential for: cid font f1 f2 f3 f4
: PDFs that combine various global scripts. : Modern OpenType fonts often get converted into