name type encoding emb sub uni object ID ----------------- ------------ ---------- --- --- --- --------- F1 CID Type 0 Identity-H yes yes yes 4 0 F2 CID Type 0 Identity-H yes yes yes 5 0 This tells you: F1 and F2 are embedded subsetted. You still need the base font if the subset is damaged. Download the matching base CID font (e.g., from Adobe). For professionals handling hundreds of legacy PDFs, create a font substitution dictionary .
pdffonts problematic.pdf Output example: cid font f1 f2 f3 f4 f5 f6 f7 fonts free download work
| Tool | Platform | Function | |------|----------|----------| | (paid) | Win/macOS | Professional font substitution – maps F1/F2 directly | | PDF XChange Editor (freemium) | Windows | "Replace Fonts" feature to swap F3 with Noto | | Ghostscript + GSview (free) | All | Command-line font remapping: -sFONTPATH=... | | pdffonts (free) | All (CLI) | Lists all F-aliases and their base names | Real-World Example – Using pdffonts: Open terminal in the folder with your broken PDF: name type encoding emb sub uni object ID
Once you set up the substitution correctly, those error messages vanish. You can view, print, and edit any Asian-language PDF without boxes, question marks, or tofu. For professionals handling hundreds of legacy PDFs, create
Install all four regional variants: JP, KR, SC, TC. Problem 3: The Alias F4 Exists but Points to a Specific Version Use a PDF font replacer tool (e.g., Mutool from MuPDF):
If you have ever struggled with viewing, printing, or editing a PDF from a Japanese, Chinese, or Korean source, you have likely encountered the cryptic error: "Cannot find or create the font 'F1'" or "CID font 'F2' is missing."
Use pdftocairo (Linux) or Adobe Acrobat’s "Preflight" tool to re-embed missing fonts. Problem 2: Wrong Language Variant If F3 expects SimSun (Chinese Simplified) and you installed Noto Sans CJK TC (Traditional), characters will differ.