OK,
feee PDF printer drivers without any advertising: BullzipPDF, PDFWriter, 7-PDF (free for private/nnocommercial use), PrimoPDF, PDFCreator, CUPS-PDF, ...
You'll find many suggestions searching the forum or google. If you call the progeress window of PDFCreator showing it's logo
advertising, ok. I won't mind that and won't count that as advertising.
There are a lot more costing a little fee per installation you can calculate into your software price. I've had excellent printing of even Excel footer/header sections other PDF drivers missed with
Last not Least also FoxyPreviewer is free, free of advertising and can generate PDFs with or without preview and other user intervention. FoxyPreviwer Docs reveal Foxypreviewer.App is extracting libhpdf.dll from itself during the first run. This library is by Takeshi Kano. So all you need to give users is write access to the folder where FoxyPreviewer.App is installed or use it once and put the above mentioned DLL into your setup. That's all.
Bye, Olaf.
PS: it would be fine to donate anyway, eg look at
There actually is a commercial version of BullZipPDF, if you embed it into your commercial application.
And I would go for FoxyPreviewer anyway.