Hi,
Please check the following example:
In short, try this:
var document = DocumentModel.Load("input.docx");
var paginator = document.GetPaginator();
paginator.GetRange(pageNumber: 0, pageCount: 5).Save("1.docx");
paginator.GetRange(pageNumber: 5, pageCount: 20).Save("2.docx");
paginator.GetRange(pageNumber: 25, pageCount: 5).Save("3.docx");
Does this solve your issue?
Regards,
Mario