The terms F1, F2, F3, and F4 in the context of CID (Character Identifier) fonts are usually not specific font names, but rather internal font aliases or "mapping tags" found within PDF documents.
If you only need to view or print the file and don't need to edit the text, use the Adobe Community Suggestion Flatten Transparency Outline Text . This converts the letters into shapes. PDF-to-PDF Export: On a Mac, opening the file in and then selecting File > Export as PDF cid font f1 f2 f3 f4 free download link
Since you cannot download a font named "F1," you must identify the original name of the font used in the document. Check Document Properties: Open the PDF in Adobe Acrobat or a similar reader. Go to File > Properties > Fonts. The terms F1, F2, F3, and F4 in
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If you've ever opened a PDF in Adobe Illustrator or Affinity Designer and been greeted by a "Missing Font" error for CIDFont+F1, F2, F3, or F4, you are not alone. Many users search for a download link to fix this, but there is a major catch: CIDFont+F1 is not actually a real font name. What are CIDFonts (F1, F2, etc.)?
In practice, F1 often maps to a font like HeiseiKakuGo (Japanese) or SimSun (Chinese), while F4 may map to a dingbat or math symbol font. However, without the original file, your system will simply refuse to render the text correctly.
Features of CID Fonts F1, F2, F3, and F4: