Processed client-side in your browser — files never leave your device.
Free, with no signup, account, or usage limits.
Works on any modern browser, including mobile.
About this tool
Use Port Scanner when you need to check if ports are open on a server. Processing runs locally in your browser — your input is not uploaded to ThothBox.
How to use
Open Port Scanner and enter the values you want to calculate or convert.
Adjust units or options if shown.
Read the result instantly.
Copy the output or try another set of inputs.
FAQ
What does Port Scanner do?
Check if ports are open on a server.
Is Port Scanner private?
Yes for typical use: input is processed in your browser and is not uploaded to ThothBox.
Is Port Scanner free?
Yes. It is free to use with no signup required.
How do I use Port Scanner?
Open the Port Scanner tool, then open Port Scanner and enter the values you want to calculate or convert.