How to convert HTML to a Word DOCX Document using C# in .NET Framework

Converting between HTML and DOCX, while often necessary, is not always easy, especially when working with large volumes of files. That’s where today’s tutorial comes in; we will be accomplishing this conversion with a bare minimum of effort and time.

First, let’s run the following command in Package Manager’s console to install the API client that we need.

Install-Package Cloudmersive.APIClient.NET.DocumentAndDataConvert -Version 1.3.4

From here we simply call ConvertWebHtmlToDocx and feed it the HTML file in question.

using System;
using System.Diagnostics;
using Cloudmersive.APIClient.NET.DocumentAndDataConvert.Api;
using Cloudmersive.APIClient.NET.DocumentAndDataConvert.Client;
using Cloudmersive.APIClient.NET.DocumentAndDataConvert.Model;
namespace Example
public class ConvertWebHtmlToDocxExample
public void main()
// Configure API key authorization: Apikey
Configuration.Default.AddApiKey("Apikey", "YOUR_API_KEY");
// Uncomment below to setup prefix (e.g. Bearer) for API key, if needed
// Configuration.Default.AddApiKeyPrefix("Apikey", "Bearer");
var apiInstance = new ConvertWebApi();
var inputRequest = new HtmlToOfficeRequest(); // HtmlToOfficeRequest |
byte[] result = apiInstance.ConvertWebHtmlToDocx(inputRequest);
catch (Exception e)
Debug.Print("Exception when calling ConvertWebApi.ConvertWebHtmlToDocx: " + e.Message );

That’s it. Seriously, it’s just that easy. Our document/conversion API also allows for a wide range of other useful similar functions. These include converting HTML and other file types to PDF, manipulating documents, and changing image formats.

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There’s an API for that. Cloudmersive is a leader in Highly Scalable Cloud APIs.

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