When you see , these are not the actual names of the fonts. They are placeholder labels assigned by the PDF creation software (like Adobe Acrobat or a web browser print-to-PDF tool). F1 simply means "Font #1" used in the document. F2 means "Font #2", and so on.
Before rushing to download files from the internet, you can resolve most CID font issues using software settings. Method 1: Install Acrobat Reader Font Packs cid font f1 f2 f3 f4 f5 f6 f7 fonts free verified download
: Often, CIDFont+F1 corresponds to Arial Bold , while F2 corresponds to Arial Regular . In other cases, they map to the Times New Roman family. How to Fix Font Errors When you see , these are not the actual names of the fonts
If your PDF reader is throwing an error or rendering text as unreadable squares (tofu blocks), use these verified, safe methods to resolve the issue. 1. Download the Official Adobe Acrobat Reader DC Font Pack F2 means "Font #2", and so on
(Character Identifier fonts) were developed by Adobe to handle large character sets (such as Chinese, Japanese, and Korean—CJK) efficiently. Instead of embedding the entire font file, which would be massive, the document references a CID system, and the interpreter maps character codes to specific glyphs.