Excel files are widely used to store and organize the data in the form of worksheets. Furthermore, you can perform various computations as well as analysis of the data. However, in certain cases, you have to convert the Excel files into other formats. For example, you may need to convert an Excel worksheet to HTML or image in order to display it within your web or desktop application. For such cases, this article covers how to convert Excel files to HTML in Node.js applications. In addition, you will learn how to use additional options to customize the converted HTML.