You'll barely see the dopdf.exe process increase CPU usage in task manager during conversion, as it uses insignificant resources to generate PDF files.

doPDF uses its own PDF libraries so not needing GhostScript installed. While this might seem that's not a problem, it means that you have to download another thing and install it in order to be able to create PDF files. Most of the other free PDF creators are using GhostScript, which basically is the core that does the PDF conversion. With doPDF you don't have any problems since it doesn't install (or suggest installing) anything additional than what's necessary.

In comparison, PrimoPDF (another alternative) uses the OpenCandy installation system, which basically 'suggests' other programs to you while installing PrimoPDF. It's really free, even for commercial purposes. After using it for a while, these are the advantages I see doPDF has over other PDF creators: Features You simply download a 4Mb file and within less than a minute you're ready to create a PDF file. DoPDF stands out from the crowd because it has the tiniest resource usage level.

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