Calculator
What the Port Scanner does
Port Scanner: calculates Status, Port probe results and Tip from Host and Ports (comma-separated).
From Host and Ports (comma-separated), this tool derives Status, Port probe results and Tip. Enter what you need and trigger it when you are ready.
Most of these tasks are one-liners in a terminal, but not when you are away from one. That is usually what brings people inspecting an API response here.
Nothing leaves the tab. You can watch your browser network panel while you use it and see for yourself.
The method, a field-by-field reference and a worked example built from the defaults are all on this page.
What do the Port Scanner fields mean?
The Port Scanner uses 2 inputs. Every field is populated on load; treat those numbers as a template rather than a suggestion.
| Field | What to enter | Default |
|---|---|---|
| Host | required | example.com |
| Ports (comma-separated) | optional | 80,443,22,8080,3000 |
How does the Port Scanner work?
Each output is derived from the inputs above in a single pass; there is no hidden state carried between runs, so the same inputs always give the same calculation.
Validation is deliberately strict: silently coercing a bad value is how wrong numbers get trusted.
What a typical run looks like
You provide: Host and Ports (comma-separated)
What happens: the file is read into memory by your browser, processed locally, and offered back as a download. It is never uploaded.
You get back: a download link for the new file and a short note on what changed.
Timing comes down to your own hardware, and the practical size limit is how much memory the browser will hand the tab.
How to use it
- Fill in Host.
- Type Ports (comma-separated).
- Press Scan Ports.
- The panel reports Status, Port probe results and Tip.
- Share the link rather than a screenshot. It carries the values with it.
What this tool does not do
- Output follows the common convention for this format; a specific toolchain may have its own house style.
- Processing happens in your browser, so extremely large inputs are bounded by available memory.
- The output is a number, not a judgement. Deciding what it means is still your job.
Frequently asked questions
Only Host and Ports (comma-separated). Each field is pre-filled with a sensible default, which makes it easy to isolate the effect of a single variable.
Nothing leaves your machine. The only network traffic is loading the page itself.
It is free to use, with no premium tier holding back the useful parts.
It matches what you would get working it out by hand, with fewer opportunities to slip.