After integrating html snapshot with your application, the next thing may be redistributing it so that every user of the app. can convert html to image by installing your app.
For registered users, it’s totally free to redistribute the htmlsnap2.dll.
Since htmlsnap2.dll is an ActiveX server, it must be registered like any other ActiveX component on the user’s machine.
Usually this can be done in the installer. Almost every installer maker supports ActiveX self registration such as inno setup. Or it can be done with regsvr32 tool.
Gdiplus.dll is also necessary to be redistributed on win2000 below machines.