This is the process of using a web tool to find out one’s IP address. The tool is usually a web application that tracks users that visit a defined URL. When a user visits the URL, a function is initialized that look into the requests and pull out the IP address and other client information. Grabify is one of the most popular IP grabbers on the Internet – and it is free. If you have coding knowledge, you can also create your own IP logging or grabbing tool.