Nuget install iText7 using iText.Kernel.Pdf; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Configuration; using iText.Kernel.Utils; using iText.Kernel.Pdf; using System.IO; using System.Web.UI; using System.Windows.
https://kathleen1974.wordpress.com/category/itext-pdf/ In one of my project, we need to give the user a web UI (a textbox) to enter some text and allow input of superscript and subscript tag <sup> and <sub>. And this text entered by user will