Changing the PDF version with iTextSharp is fairly easy, all you have to do is create a stamper and pass an extra parameter with the PDF version you want. Below is the code snippet to accomplish this in C# and VB.NET.
Flatten PDF Form Fields with iTextSharp – Two Methods – ASP.NET
I will show two methods to flatten editable form fields in a PDF file. Method 1 is true form flattening and method 2 is just making the editable fields read only. Personally I was using method 1 for some time, however in some instances (more specifically when merging images into a PDF file and messing […]