Scan your localhost (127.0.0.1) to find open ports and running services like development servers and databases.
Uses recursive WebSocket protocols. May take up to 10 seconds to fully time out.
This tool identifies open ports on your local machine using standard browser-based network tests. It helps you quickly verify if your development servers or databases are active without using terminal commands.
The scanner detects active local ports by attempting light-weight connections. This diagnostic method provides quick insights into your local development environment's availability.
To ensure security and comply with browser policies, this tool only scans your internal localhost. It cannot be used to scan external IP addresses or websites.
An open port means that there is active software running on your computer currently "listening" for incoming connections on that specific channel. For example, if Port 3306 is open, it almost certainly means a MySQL database is actively running in the background.
Standard ports like 80 and 443 are for common web traffic. Ports like 3000, 8000, and 8080 are frequently used by modern development frameworks like React, Node.js, and Python. This scanner checks for these to help you debug your setup.
Local network stacks resolve Connection Refusals dynamically based on internal routing tables, IPv6/IPv4 priority, and active system firewalls. If your computer's firewall actively drops a connection instead of bluntly refusing it, the script waits for an absolute timeout limit before marking it as closed.