If you are trying to edit a document with these fonts, follow these steps: : Open the PDF in Adobe Acrobat . Go to File > Properties > Fonts .
: These are just random names; there is no universal "F1" font.
This comprehensive guide breaks down the underlying PostScript technology, explains why these designations appear, and provides step-by-step methods to resolve rendering and text-editing errors associated with them. 1. What is a CID Font?
This article was last updated with reference to ISO 32000-2:2020 and Adobe Technical Note #5014 (latest revision). Font technology continues to evolve, but the fundamental CID architecture described here remains the foundation for high-quality CJK text rendering in professional document workflows. cid font f1 f2 f3 f4
5 0 obj << /Type /Page /Parent 2 0 R /Resources << /Font << /F1 10 0 R /F2 12 0 R /F3 14 0 R /F4 16 0 R >> >> /Contents 20 0 R >> endobj
In many Adobe PostScript printers, RIPs (Raster Image Processors), or PDF analysis tools, are Font Numbers or Font Indexes assigned to different CID supplements. They are not font names, but slots where the printer loads specific character collections.
In the page’s /Resources: /Resources << /Font << /F1 10 0 R >> >> If you are trying to edit a document
When you see F1 , F2 , F3 , or F4 attached to a CID font error, these are simply assigned by the PDF generator or the software rendering the file.
Here is a comprehensive guide to understanding what CID fonts are, why these specific errors happen, and exactly how to fix them. What is a CID Font?
: When a specific CID font isn't available, provide intelligent fallback options based on the CIDSystemInfo registry. This article was last updated with reference to
If you are getting errors opening a file with these names in programs like Adobe Acrobat Affinity Designer , try these methods: The "Print to PDF" Trick
As one expert in the Adobe forums clarified, a statement like " CIDFont+F1 is always Arial Bold" is a that spreads from an old, mistaken post. The mapping of the F1 name is entirely arbitrary and changes from document to document based on the specific software and fonts used to create the PDF.