Select the text and change the font to a standard, fully embedded font (like Arial or Helvetica). Common Questions Regarding CID Fonts
Utilizing online converters, as suggested by some users, might help convert the PDF into a format where text is converted to curves, eliminating the need to install the missing fonts. cid font f1 f2 f3 f4 free download link
(Excellent for Asian CID issues) How to Fix "CID Font F1 F2 F3 F4" Issues Select the text and change the font to
Upload your PDF to a trusted, free online tool like or Smallpdf . Choose the PDF to JPG conversion feature. as suggested by some users