If using Acrobat Distiller, ensure the "Embed All Fonts" setting is activated in your job options.
Ensure your operating system has the appropriate language support installed. On Windows, this may involve installing the “Supplemental Fonts” or “East Asian Language Support” packages. On macOS, CJK support is usually built-in, but you may need to activate the specific fonts in your Font Book. If the issue persists, the PDF’s internal CMap may be faulty. Cid Font F1 Normal
This is a classic missing font error. The simplest workaround is to open the PDF in a different application, such as Apple Preview (on macOS) or another PDF reader. Then, use that application’s “Export” or “Save As” function to create a new PDF. This process often re-embeds the fonts and resolves the error. If using Acrobat Distiller, ensure the "Embed All
For 99% of users, you should replace Cid Font F1 Normal with a standard Unicode font. However, when faithfully reproducing a vintage document’s exact line breaks and spacing, keeping the original CID mapping is essential. On macOS, CJK support is usually built-in, but
