Sequential tags assigned by the PDF generator. For example, F1 might be the bold version of a font, while F2 is the regular weight.
If you need high-quality CID-keyed fonts for personal or professional use, you do not necessarily need to pay for expensive Adobe software. There is a robust ecosystem of high-quality CID fonts available, primarily maintained by Open Source communities, universities, and government ministries.
When a PDF is improperly created or if fonts were not fully embedded, the system substitutes the original font with a temporary "CIDFont+X" designation. Sequential tags assigned by the PDF generator
When a software program (like Adobe Acrobat, Microsoft Word, or a web browser) generates a PDF, it compresses and optimizes the file. To save space, it often renames the fonts used in the document to generic internal labels.
If your document is complaining about missing F1–F7 CID fonts, the issue usually stems from one of two technical oversights: There is a robust ecosystem of high-quality CID
If you are a developer or graphic designer looking for legitimate, high-quality, free CJK fonts to prevent these issues in your own projects, avoid generic search terms. Instead, download recognized, open-source pan-CJK font families:
A: When creating the PDF (e.g., from Microsoft Word or InDesign), go to the print or export settings. In Adobe Acrobat Distiller, navigate to Settings > Fonts and ensure "Embed all fonts" is selected. For CID fonts, ensure "Subset embedded fonts when percent of characters used is less than" is set to 0% to embed the whole font. To save space, it often renames the fonts
Is the text supposed to be in an or an architectural diagram ?
Your new font is called "NotoSerifCJK-JP." They don't match.
To save space, the software often renames the embedded fonts to short, generic system aliases. Instead of embedding the full commercial name of a typeface, the PDF generator labels them sequentially: (Font 1) F2 (Font 2) F3 (Font 3) F4 (Font 4) F5 (Font 5) F6 (Font 6) F7 (Font 7) The Source of the Error