Software like AutoCAD frequently exports drawings using internal font aliases ( F1 , F2 ) without standard system mappings.
While the specific visual style depends on the font family pack, these designations usually map to:
Several open-source CID-keyed font projects are available on GitHub:
: In most cases, these placeholders map to common system fonts. For example, "CIDFont+F1" is often Arial Bold or Times New Roman , while "F2" might be Arial Regular .
: "CID" (Character Identifier) is a method used in PDFs to support large character sets, such as those used in Asian languages or complex OpenType fonts. How to Resolve Missing Font Issues