The repository is used for comparing different pdf handle component such as Aspose.Pdf , Spire.Pdf and iText so on,you also can consider it as a demo repository that show how to use those component.
This Demo was just implemented some library(Aspose.Pdf, Spire.Pdf, iText7), some of those is commercial component.Some people maybe asked why not to choose more open-source librabry.However the most features libraries are almost charged and the most popular open-source library is iTextSharp(iText7 is its rafactor version),so i think only choosing this one is enough.
Even this demo was just implement three components,but the project is designed loosely coupled, you can realize you need component easily by implement IPdfComponentFunc interface, and application will add it to component's dropdownlist automatically.
UseComponent this list is used for selecting component
InputFileDir select the files located directory(not path) which you need to handle
OutputFIleDir select the directory you hope to output result
ExecuteTimes this is used for testing component's performance, meant excute times in total.
i think the blow button is easy to understand, just explain the button AllRun is meant excute all action.