Browser Information
Everything this page can read about your browser, screen and system — shown to you instead of collected.
Runs entirely in your browser
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How to use
- Open the page — the reading happens as soon as it loads.
- Check the browser and system your device actually reports.
- Copy everything into a bug report when someone asks what you are using.
- Resize the window and read again to see the window figure change while the screen does not.
Features
- Browser, engine, operating system and device type, parsed from the string your browser sends.
- Screen, available area and window size kept apart, because they are three different numbers.
- Values a browser declines to report shown as unreported, rather than filled in with a guess.
- Language, time zone, colour scheme and reduced-motion preference.
- Everything read locally: nothing is uploaded, stored or logged.
Frequently asked questions
- Is any of this sent anywhere?
- No. Every value is read in your browser and rendered on the page; nothing is uploaded, stored or logged. The point of the page is the opposite of collection — these are the things any site can read without asking, so it is worth seeing them once.
- Why does my screen say 1920 × 1080 but the window says something smaller?
- They are different measurements. The screen is the display, the available area is what remains once the system's taskbar or dock is taken out, and the window is the part of it this page is drawn into. Layout bugs are usually about the last one, which is why it is listed separately.
- Why are some values missing?
- Because your browser chose not to report them. Safari does not expose CPU cores or memory, and several browsers now round or hide values that were once precise, specifically to make fingerprinting harder. A missing value here means the browser stayed silent — it is not an error.
- Does Do Not Track do anything?
- Almost nowhere. It is a request, not a control, and it was never widely honoured; browsers have been removing the setting. It is listed because it is one of the things a site can read about you, not because turning it on protects you.
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