Converting pdf to text file

Have you been in a situation wherein you want to convert your pdf files to text files but you do not have a software in your machine to convert them or you do not want to download online software to avoid risks of worms and trojan viruses? 

Well, an online facility will do it for you, just visit the Data conversion online, browse and locate the files that you want to convert and click the Go button.  However, it could not convert encrypted or secured pdf files but I think there are ways to do it, but I am still researching on how to do it.