Design a Gif Animated Image of Web App showing Functionality

We would need some one to design a Simple Gif Animated showing our complete tool in an animated gif. A simple walkthrough where you scroll down our tool and show it in an animated gif. Our Web App/Tool link would be given through Direct Message to interested bidders. We would need simple gif in size 500 X 500 pixels. And you would need to highlight some text during scroll down on our web app which should show in gif image.