This often "flattens" the font identifiers and replaces the CID tags with standard shapes. 3. Identify the Original Font
If you have a file that displays correctly but won't print or edit due to F1/F2 errors: Open the PDF in a web browser (Chrome or Edge).
Select and choose Save as PDF or Microsoft Print to PDF .
Restart your reader; the "F1" text should now render correctly. 2. Use a "Print to PDF" Workaround
In the world of digital publishing and PDF management, encountering technical font names like is common. These aren’t typical brand-name fonts like Arial or Times New Roman; rather, they are internal identifiers used by PDF generators.
If your document is missing these fonts and you need free replacements to make the file readable, consider installing these universal character sets:
If you are searching for a way to fix, download, or handle these fonts for free, this guide explains what they are and how to resolve missing font errors. What Are CIDFont F1 through F4?
Most "F1/F2" errors occur because the PDF contains Asian language characters that your standard reader doesn't recognize. Adobe offers free "Extended Font Packs."