Cidfont-f1 F2 F3 F4 F5 F6 Info
| Problem | Likely Cause | Solution | | :--- | :--- | :--- | | | Cidfont-f1 does not contain the correct glyph range. | Install proper native CID fonts (e.g., Source Han Sans) and remap via cidfmap . | | Printer shows "Cidfont-f4 not found" | RIP expects font in Slot 4, but memory is cleared. | Re-upload the original CID font file to Slot 4 via printer's web admin. | | PDF/A validation fails | Generic fallback name is not embedded per ISO 19005. | Replace with a permanent, embedded TrueType/OpenType font. | | Ghostscript substitution errors | lib/cidfmap is missing or malformed. | Add line: /Cidfont-f2 /NotoSansCJK-Regular ; |
When a PDF is generated correctly, the creator embeds the font subset directly into the file. If the creator forgets to embed the font, your PDF reader must look for that font on your local computer. Because your computer does not have a font natively named "Cidfont-f1," the reader tries to guess a replacement. If it cannot find a suitable substitute, the text turns into gibberish or blank spaces. 2. Corrupted Font Encoding Maps
If the font appears within a PDF, run:
CIDFont is a shorthand for “Character IDentifier Font,” a font format developed by Adobe Systems to efficiently handle large character sets, particularly for languages like Chinese, Japanese, and Korean that contain thousands of glyphs. Unlike traditional fonts that identify characters by name, CID-keyed fonts use numeric Character IDentifiers (CIDs) to reference individual glyphs, making them more efficient for complex writing systems.
The naming ( f1 to f6 ) strongly implies a : Cidfont-f1 F2 F3 F4 F5 F6
Download and install the free, official . Open the problematic PDF inside Acrobat.
Only a subset of the font was embedded, and now that subset is corrupted or missing. | Problem | Likely Cause | Solution |
You are opening a PDF on a computer that does not have the original font installed, and the PDF does not have the font fully embedded. 3. How to Resolve "Missing Font" Errors