In order to convert a file you need to add file:// to the front, otherwise it defaults to http. The download does not tell you that you need version 7 of the ABCpdf.NET install - but that's what's required, and if you install this software first then you'll have to uninstall it and re-install after installing the .NET product. You don't read until after installation that you can get a free license - I haven't verified that this is true. One other thing - when I have a one page document it still creates a 2 page pdf. (2nd page blank) I have yet to discover how to fix this. Otherwise, it is fast, compared to the other products I've tested. However, it can't handle a large file successfully for me. I don't know if this is due to how the original html file was created, or if it's part of this program. Other programs convert better but still not perfect.