: If editing the file in software like Adobe Illustrator or Affinity Designer, manually replace the "missing" CIDFont+F1 with standard fonts like Arial (Bold) or Myriad Pro to restore the intended look.
: Be cautious of websites claiming to offer "extra quality" downloads of CIDFont F1, as these are often unreliable sources for a font that technically does not exist as a standalone retail product.
: Names like "CIDFont+F1" or "F2" are often random aliases assigned by software (such as CAD programs or PDF exporters) during the embedding process. Underlying Typefaces
Be extremely cautious of websites offering "CIDFont F1 free download" for Mac. These are often unreliable and may contain malware. Since "CIDFont F1" is not a standard retail font, these downloads are likely generic font files renamed to match your search query. CIDFont+F1 issue - Adobe Community
: In Adobe Illustrator, try importing the PDF into a new document rather than opening it directly, then use the Transparency Flattener to turn the text into outlines. 3. Installing Standard Fonts on Mac