Network Info Guide
Show what this browser exposes about its connection, device, screen and locale.
A short companion for Network Info: when it is useful, what it expects, and what to check before using the result.
What it does
A snapshot of the connection and device facts a browser exposes to a page: online state, the Network Information values where they exist, screen and viewport size, pixel ratio, language, CPU threads, memory hint and time zone. It is read locally and never uploaded.
Use the tool
Open Network Info, add the input the tool asks for, run it, and check the output before using it elsewhere.
Input and output
- Input: text.
- Output: text.
- Category: Network.
Privacy and processing
Processing happens locally in your browser. This tool does not upload the input to ilham.dev.
Questions
Why are some values blank?
Support varies. The Network Information API, deviceMemory and hardwareConcurrency are not in every browser, and some are rounded or capped for privacy. A dash means the browser did not provide a value, not that it is zero.
How accurate is the downlink and round-trip time?
They are estimates the browser derives from recent traffic and are deliberately coarse. They are fine for choosing an image size or deciding whether to prefetch, but not for measuring a connection.
Does this reveal my IP address or location?
No. The page only reads values the browser already exposes to JavaScript. It does not call an IP service, does not use geolocation and does not make a network request.
Why does the time zone matter?
It is handy when you are debugging a timestamp bug and need to know what the browser thinks local time is. It comes from Intl, so it reflects the system setting rather than anything you typed.
Related guide
For broader background, see Network Debugging Notes.