convert_to_pdf throw an error: pdf device does not support substitute fonts

[hbh112233abc]

hi,

I use convert_to_pdf to copy some pdf,but the below file throw an error: ==pdf device does not support substitute fonts==

dwg.pdf

my env:
win10 64bit
python 3.7.3
pymupdf 1.18.17

Do you have some solution for this problem??

[JorjMcKie]

No, sorry. PDF-to-PDF conversion does not work under all circumstances. Most often, use of unsupported font types is the reason.