Using the "File" menu, then "Import" action, HelpNDoc can import various existing documentation formats, including:

  • Compiled CHM help files as well as source HHP projects;
  • WinHelp HLP files;
  • ePub eBooks;
  • HTML web pages. This format can be split into multiple topics based on heading level or font size;
  • Text files;
  • Word documents including RTF, Doc and DocX file formats. These formats can be split into multiple topics based on heading level or font size. Note: the free Microsoft Office converter might be required to import Doc and DocX documents on some systems;
  • Folders that can contain one or multiple of the previously mentioned formats. Each file will be imported into its own topics;


Additionally, for some documentation formats such as the CHM help format, it is possible to only import the table of contents into a new project:

  • Create a new project;
  • In the new project wizard dialog, click the "import from existing project" link to import the table of contents of a specific CHM file;