When sending a PDF with heavy CID font subsets to an older or budget office printer, the printer’s memory can easily become overwhelmed. The printer has to manually reconstruct the font maps for F1 through F6 before it can lay ink on paper, resulting in massive print delays or print jobs that fail entirely halfway through. How to Fix CID Font Problems
Instead of mapping a character directly to a specific keyboard stroke or simple byte value, a CID font indexes characters using a unique font-independent registry number (the CID). A separate file, called a , tells the PDF reader how to map those specific CIDs to the correct visual shapes (glyphs) on your screen. 2. The F1 through F6 Labels cidfont f1 f2 f3 f4 f5 f6
If you are opening the file in vector software like Adobe Illustrator and encounter missing text, you must substitute the placeholder titles with real font files installed on your local drive. Placeholder Tag Common Original Font Safe Substitution Alternative Arial Regular / Helvetica Arial, Myriad Pro, or Roboto CIDFont+F2 Arial Bold Arial (Bold), Arial Black CIDFont+F3 Times New Roman / Garamond Georgia, Times New Roman CIDFont+F4 Courier New / Monospace Consolas, Courier, Source Code Pro CIDFont+F5 Secondary Display / Script Trebuchet MS, Calibri CIDFont+F6 Secondary Math / Symbol Segoe UI, Arial Unicode MS Method 3: Outline Text Conversion When sending a PDF with heavy CID font
Upload the PDF to a reliable OCR tool (such as Adobe Acrobat Pro, Abbyy Finereader, or a free online alternative). A separate file, called a , tells the
If you are dealing with a problematic PDF containing cidfont+F1 through F6 errors, use the following methods to resolve them: Method 1: Print as Image (Quick Printing Fix)