If you want, tell me which operating system and output tool (Word, LaTeX, InDesign, PDF generator) you’ll use and I’ll give step-by-step commands and exact font-file choices.
The PDF creation software improperly mapped the characters, confusing your PDF reader's rendering engine. How to Fix Missing CID Font Errors
Click OK and Print. This converts the text into a visual map before sending it to the printer, eliminating the font conflict. Step 4: Re-Distill or Convert the PDF
If you are designing a document or trying to print a problematic PDF, converting the text into vector outlines strips away the font dependency entirely.
For users working with Traditional Chinese, the MOE (Ministry of Education) CID fonts are an excellent resource.
AutoCAD uses F1, F2... for SHX fonts. Install the mapping tool or replace SHX with TrueType.
Not all free fonts are equal. Here is how to ensure your CID replacements are print-ready:
If you absolutely need the exact F1 tag to map to a specific font, use (free tool):
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