I am using Aspose.Pdf to find and replace text in a Pdf File. If a Pdf File has 10 words to find and replace then it is taking 2 to 3 minute. But if a Pdf File has 80 words(10 words are repeating 8 times on the File) then it is taking 20 to 25 minutes in Finding and replacing text on a Pdf File. I am using the below code. Please suggest me what the changes i will make in my code that it will take minimum time.