: If the recipient's computer doesn't have the original font, the software may fail to "create or find" CIDFont+F1, resulting in text appearing as dots or garbled characters.
You usually encounter this name when a PDF displays an error saying "CIDFont+F1 cannot be created or found." This happens because:
If you have Acrobat Pro, you can force the software to fix the embedding: CIDFont+F1 issue - Adobe Community
These languages have thousands of characters. CID fonts act like a massive lookup table. The f1 portion of cidfontf1 is usually a —a label assigned by software (like Adobe Acrobat, Photoshop, or a printer driver) to reference a specific subset of a loaded CID font.
