– create cidmap.txt :

For legacy PDFs specifically using F1 as Ryumin-Light (a very common Japanese CID font), the (based on GAJI) is a free drop-in replacement.

Since you can't download these fonts, use these methods to restore your document: Impossible fonts to be found / Fontes impossíveis de achar

If opening the file in a program like Adobe Illustrator, manually replace the missing "CIDFont+F1" with . This often restores the correct appearance. 3. Font Information Summary Placeholder Likely Actual Font CIDFont+F1 Arial Bold / Myriad Pro Header or bold text CIDFont+F2 Arial Regular Standard body text CIDFont+F3-F7 Varies (e.g., Times, Tahoma) Different weights or character sets (Asian characters) identifying