When a PDF is generated, the software often converts fonts into CID (Character ID)
This keyword string follows a specific pattern that suggests a technical artifact rather than a commercial product. To provide a valuable, long-form article, we will deconstruct exactly what this keyword means, where it likely comes from (PostScript/CID-keyed fonts), and how to handle these "F1-F6" variants in a professional workflow. Cidfont-f1 F2 F3 F4 F5 F6
If you see these names in a document, it usually means the original font information is missing or the PDF was exported in a way that "flattened" the font names. This makes the text difficult to edit because other software (like Adobe Illustrator or Nitro Pro) won't know which actual font on your system to use. Common Fixes for Font Errors When a PDF is generated, the software often