Since you cannot download a "CIDFont+F1" file, you must use workarounds to restore the text:
If or Illustrator is giving you trouble, try dragging the PDF into Google Chrome or Microsoft Edge . Browsers often have more flexible PDF engines and can sometimes render the text properly even when specialized software fails. 2. Export or "Print to PDF" cidfont f1 f2 f3 f4 f5 f6 install
or a browser) and use the "Print to PDF" or "Export as PDF" function to create a new version of the file. This often flattens or re-embeds the characters so they display properly. Convert to Outlines : If you are using Adobe Illustrator Since you cannot download a "CIDFont+F1" file, you
: After installation, automatically register the fonts with the system. This might involve updating font indexes or caches that the operating system or desktop environment uses to manage fonts. Export or "Print to PDF" or a browser)
CIDFont F1, F2, F3, F4, F5, and F6 do not refer to a single "installable" font family you can download from a store. Instead, they are generic placeholders created when a PDF is exported or printed without its original fonts being properly embedded. Google Groups Understanding the Error
If you control the PDF creation, embed all fonts: