当你看到 CIDFont+F1 这样的字体名称时，意味着 PDF 阅读器或编辑器。此时，文档处理软件会将缺失的字体临时替换为一个通用的 CID 字体标识符，格式通常为 CIDFont+F1 、 CIDFont+F2 、 CIDFont+F3 等。
Enable the option that says or Subset Fonts Below 100% . Save the file and re-verify the font properties. Technical Breakdown: What Do the Labels Mean? Font Alias Typical Original Font Type Common Use Case Cidfont-f1 Primary Document Font Main body text (often Times New Roman or Arial variant) Cidfont-f2 Secondary Document Font Bold headings, subheadings, or italicized emphasis text Cidfont-f3 Specialized Script / Symbols Mathematical symbols, custom bullet points, or icons Cidfont-f4 / f5 / f6 Extended Character Subsets Cidfont-f1 F2 F3 F4 F5 F6
Adobe developed CID fonts to solve a massive problem in digital typography: handling languages with vast character sets. Standard Western fonts (like Arial or Times New Roman) only need to map about 256 characters. However, East Asian languages (such as Chinese, Japanese, and Korean, collectively known as CJK) contain tens of thousands of unique characters or ideographs. Font Alias Typical Original Font Type Common Use
If you see these codes printed out on physical paper instead of your actual document, the breakdown is happening between your computer and your printer. High-end printers utilize PostScript drivers to interpret PDFs. If the driver cannot parse the CID-keyed font map sent by the computer, it will literally print the error log or raw font strings (like "Cidfont-f1 missing") across your pages. How to Fix Cidfont-f1 to F6 Errors If you see these codes printed out on