title: Batch Process images on AWS S3 using SQS
body: <p>I am using AWS EC2 for my web application that watermark images, resizes them in 5 different sizes and uploads them to AWS S3 along with original Image.</p>
  
  <p>Now I want to process original images again to add a new watermark and make new sizes.I have a million images on S3 and I am confused how to process them.I have researched google and read many blogs. Only I found that I can use SQS for this but I don't know how it will work and how to configure it.</p>
  
  <p>I want this to be done on very less time.
  How should I proceed further ?</p>