If you have DOCX installed on your machine, then you can use Word automation (Interop object) to convert DOCX to HTML referred assembly 'Microsoft Office 8.0 or 14.0 object library' and you can do it easily see below link Microsoft Interop API to convert the .doc, .docx, .dot, .dotx and .xls,.xlsx, .rtf to HTML[^] OR you can use OpenXmlSDK to convert it to HTML, PowerTools for Open XML has DOCX to HTML facility check here[^] Hope it helps Find More .Net development tips at : .NET Tips The only reason people get lost in thought is because it's unfamiliar territory.