This document provides an introduction to iMacros, which is a tool that can be used to automate tasks in a web browser without coding. It discusses building scripts with iMacros to automate common tasks like data extraction from web pages and testing across websites. It then demonstrates some examples of iMacros scripts, such as a mass following script for Twitter, an auto-view macro for LinkedIn using JavaScript, and scraping and following artist followers from SoundCloud. Finally, it discusses some limits of iMacros, such as being unable to relaunch macros indefinitely, and provides alternatives to iMacros like PhantomJS, CasperJS, and SpookyJS.