什么是 Port Scanner？
Scan common TCP ports on a public host — check which services are reachable from the server. This Port Scanner is part of our free developer tools collection on freetoolstouse. It runs entirely in your browser, so your files and inputs stay on your device unless the tool explicitly performs a network check (for example DNS or SSL lookups). There is no signup, no watermark, and no usage cap. Use it whenever you need a fast, accurate result without installing software.
如何使用 Port Scanner
- Open the Port Scanner and review the input fields or upload area.
- Enter your data or upload the file the tool accepts.
- Adjust any options (format, units, or settings) if shown.
- Run the tool and review the output or download link.
- Copy, download, or reuse the result in your workflow.
常见用例
- Quick developer tools tasks without desktop software
- One-off jobs where you need a trustworthy result fast
- Learning how port scanner works with instant feedback
常见问题
- Is the Port Scanner free?
- Yes. The Port Scanner is completely free with no signup required. It runs in your browser on freetoolstouse.
- Is my data uploaded when I use the Port Scanner?
- This tool may send the hostname or address you enter to our server to perform a live network check. We do not store your queries long term.
- Do I need to install anything to use the Port Scanner?
- No. Open the page in any modern browser on desktop or mobile. No download or account is required.
