You cannot download these fonts from a website because they don't exist as public files. However, you can extract them from the PDF they are living in (provided the license allows it).
The "Interesting" Fix: Don't look for a download link; look for an extraction tool.
If you're looking for free downloads of fonts that might match what you're seeking, here are some steps and resources you can use:
If you have landed on this page, you are likely staring at a frustrating error message in Adobe Illustrator, AutoCAD, or a PDF editor: "Cannot find CID font 'F1' (or F2/F3)." You might be searching frantically for a "free download link." cid font f1 f2 f3 free download link
You are not alone. Thousands of graphic designers, engineers, and prepress operators face this issue daily. The codes F1, F2, and F3 are not actually font names—they are placeholders or internal CID keys used by software when a specific Asian or complex script font is missing.
In this 2,500+ word guide, we will explain exactly what CID fonts are, why F1/F2/F3 appear, and—most importantly—where to find legal, safe, and free download links for compatible replacements.
Always ensure that the fonts you download are licensed for your intended use, whether it's for personal or commercial projects. You cannot download these fonts from a website
Finding a legitimate "free download link" for CID fonts (specifically labeled F1, F2, F3) is tricky because these are usually not standalone font files meant for public use. Instead, they are almost always internal references found inside PDF files.
Here is an interesting review of the situation, explaining why people look for them, the technical reality, and the safe way to handle them.
CID fonts are a type of font used in PostScript and PDF documents, especially useful for languages that require large character sets. They are often associated with Adobe's font technologies. If you're looking for free downloads of fonts
Apple’s PDF engine (CoreGraphics) aggressively enforces font validation. The F3 error appears constantly when opening PDFs from Windows users.
The free terminal fix (no download link required):
# Open Terminal
sudo ln -s /System/Library/Fonts/Supplemental/AppleMyungjo.ttf /Library/Fonts/F3
sudo ln -s /System/Library/Fonts/STHeiti\ Light.ttc /Library/Fonts/F2
sudo ln -s /System/Library/Fonts/AppleSDGothicNeo.ttc /Library/Fonts/F1
Note: This creates aliases. Not perfect, but works for preview.
Better solution: Download Noto Fonts (free) and use Font Book to enable them.