CID font: CID fonts are a type of PostScript font developed by Adobe. They are designed for use in printing and are known for their high quality. CID fonts are often used in professional printing environments because they provide precise control over the appearance of text.
If you are trying to open a PDF in Illustrator and getting font errors, do not open it directly. Instead, import/place the file into a new document and use the Transparency Flattener cid font f1 family
The "F1 Family" is distinct because it signals a broken or missing typographic chain rather than a deliberate design choice. CID font : CID fonts are a type
Problems with the CID font F1 family usually stem from encoding issues during the PDF's creation. Common causes include: CIDFont+F1 issue - Adobe Community If you are trying to open a PDF