You generally cannot "type" in Cid Font F1 within a PDF editor because the actual font file isn't installed on your system—it only exists as a subset inside that specific document. 💡 How to Fix It
When Adobe Acrobat Distiller 3.0 and 4.0 were dominant, users converting PostScript (.ps) files to PDF would sometimes encounter errors like: Cid Font F1 Normal
If you are on a Mac, use the native application to resave the file. Preview's rendering engine often bypasses the CID decoding bug. Open the broken PDF in Preview . Click File -> Export as PDF . You generally cannot "type" in Cid Font F1