VisualPing.io is a new web app that lets you monitor web pages and it sends an email alert when it detect any change in the content of the page. Unlike other web-based change detection tools, Visual Ping is easier to setup and completely free.
Enter the web address (URL) of a web page and Visual Ping will create a screenshot image of that page. You can create a selection anywhere on that page using your mouse and enter your email address. The service will monitor that particular area of the page every hour and whenever it detects a change, it will send you before and after screenshots of the specified area.
