Pros: Excellent conversion speed, it could convert almost all files into PDF files.

Cons: The interface is intuitive but too rough. It doesn't support dragging files to the working panel.

A program's CHM files is important to users, we don't want to let them revisable. As we all known, PDF file could not be revised easily, So, a powerful CHM to PDF converter is necessary, and Document2PDF Pilot is a nice choice. See a screenshot of this program:

Document2PDF Pilot is quite easy to use, just 3 steps, you could convert your CHM files into PDF files. It could also convert many other files to PDF file, such as Word, Excel, text and etc.

Document2PDF Pilot supports batch conversion, you could add a folder to this program and click convert, it will convert several documents simultaneously.

It is not only designed for beginners, but also for the experienced users. There are also great functions Document2PDF Pilot offers us, such as PDF security options, password protection mode and different compression modes. So, you could tweak it according to your need.

System Requirements:
CPU:Pentium III or better, Internet Explorer 6.0 or higher, MS Office installed (need for MS Office document conversion), and about 5 MB hard disk space.
When I was using this program to convert a CHM file to PDF file, it occupied 37,336KB RAM, which was a litte more comparing with other PDF convertors, but the conversion speed is excellent.

Conclusion:
Document2PDF Pilot is quite a powerful program to help us convert CHM and many other files to PDF file. According to its excellent performance, it deserves recommended.