The primary cause of these placeholders is a simple issue with font embedding. When a PDF is created, the creator has a choice: embed the full font data within the document or not. In many cases, fonts are not embedded, often to keep the file size smaller. The PDF then relies on the operating system of the person opening the document to have that same font installed.
A: No—if done correctly, repacking preserves or even improves text extraction.
This comprehensive guide breaks down what these generic font types mean, why they cause systemic export and editing failures, and how to to repair the underlying PDF file. Understanding CID Fonts and Generic Identifiers (F1–F4)
: These are generic names assigned to embedded fonts within a PDF when the original font information is lost or substituted. F1 often refers to Arial Bold . F2 often refers to Arial Regular . cid font f1 f2 f3 f4 repack
FontForge provides specific functions to "repack" CID fonts into standard formats:
In short, repacking resolves the "missing font" error by making the PDF self-contained and portable again.
The easiest way to repack a PDF and strip out broken CID font references is to force the operating system to re-render the file using standard system fonts. The primary cause of these placeholders is a
Close Acrobat, then locate the new .ps or .eps file you just created.
Go to > Save As Other > More Options > PostScript (.ps) . Save the file to your desktop.
When you see a PDF listing fonts simply as "F1" or "F2," these are . The PDF creator (software like InDesign, a PDF printer driver, or a library) assigned these temporary labels to the font resources. The PDF then relies on the operating system
Did this error happen after trying to the document?
Attached: cid-repack.sh script (requires fontforge + cidtool).
generated by software when the original font information cannot be fully embedded or decoded. Understanding the CIDFont Mechanism Character Identifier (CID) font