: To keep file sizes small or protect copyright, some PDF generators rename subsets of fonts (like Arial or Times New Roman) to generic identifiers like F1 or F2 .
: If the software fails to embed the full font information, it assigns generic labels like (often Arial Bold) or (often Arial Regular). Missing Data Cidfont-f1 F2 F3 F4 F5 F6
"CidFont: A CID-keyed Font System for Multilingual Typography" Authors: Adobe Systems Incorporated Published: 1996 Available at: https://www.adobe.com (or via the Internet Archive) : To keep file sizes small or protect
If you work in prepress or PDF engineering, seeing Cidfont-f4 in a preflight report is a red flag. It means fonts are and output will be inconsistent across different printers. It means fonts are and output will be
"CID" (Character Identifier) is a method used to embed complex or large character sets into a PDF. Example Mapping: In many cases, CIDFont+F1 might actually be Arial Bold Arial Regular How to Fix or Identify Them Check Document Properties: Open the PDF in Adobe Acrobat File > Properties > Fonts
: These suffixes typically refer to different styles or weights of the original font used in the document (e.g., F1 might be Arial Bold, while F2 is Arial Regular). Why You Are Seeing Them