Create a cidfmap file and map aliases:

"The font 'F1' cannot be found. The document will use the default font."

To fix "Missing Font" errors or get the high-quality versions, follow these steps: Identify the Real Name Open the PDF in Adobe Acrobat File > Properties > Fonts

Understanding how Character Identifier (CID) fonts operate is essential for graphic designers, digital archivists, and anyone trying to fix corrupted text in a PDF. What Are CID Fonts (F1 to F7)?

Because F1 through F7 are internal PDF placeholders, searching the internet for a file named "Font F1.ttf" will usually lead to low-quality, untrustworthy websites. Instead, use these proven, high-quality methods to fix the issue. Method 1: Install the Adobe Acrobat CJK Font Pack

Once installed, restart your PDF reader, and the document should render perfectly. Method 2: Convert the PDF Text to Outlines (For Printing)