If you want to know if a website has updated its content, you can just go to the website and check it manually. This gets old when you have multiple sites or pages you’d like to keep track of. Enter web content monitoring tools. They monitor changes on any website you’re interested in and send you an alert or email.
This post identifies 5 content monitoring tools that notify you of any changes in your favorite pages without having to constantly check them yourself. The services are usually free if you are only checking a few pages.