A Port Checker Tool helps users check whether a specific port on a server or computer is open or closed. This is important for website owners, developers, network administrators, and even normal users who want to make sure their internet connection or application is working properly. If a port is blocked, emails may not send, websites may not load, or online games may not connect. Many people face problems like server downtime, firewall issues, or application errors, but they do not know the real reason. Often, the problem is related to closed or blocked ports. Using a Port Checker Tool makes it easy to find the issue in just a few seconds. You simply enter the IP address and port number, and the tool tells you the result.