Do you need to change existing pdf files on a web server? With PDF Server Script you can add text and pictures to existing pdf files with the help of a script language. You can also search and replace the existing page source code. In most cases you can search and replace the existing text from the script. You can create a script file with the commands to manipulate the pdf files and then call the program PDF Server Script with the name of the script file as first parameter. The program then processes the script file in the background. You can run multiple scripts at the same time. So you can change pdf file online from within a Windows Web Server Script. The script file is a simple text file. Each line is one command. Each command has one parameter.