System & Battery Info
See your battery status, screen resolution, CPU cores, memory, OS, and browser — detected locally.
Examples
Check screen resolution
Input
Open the page
Output
Display → 1920 × 1080, 2× pixel ratio
Check battery
Input
Open the page
Output
Battery → 82%, charging, 1h 10m to full
Identify your browser
Input
Open the page
Output
Browser & OS → Chrome on Windows
About this tool
This free system & battery info tool shows what your browser knows about your device — battery status, screen resolution, CPU cores, memory, connection, and your browser and operating system. It's a fast way to answer “what is my screen resolution”, “what browser am I using”, or check your battery, all detected locally with nothing uploaded.
How to use
- Open the page — everything is detected automatically.
- Read your battery, display, hardware, and browser details.
- Battery and connection values update live where supported.
Common uses
Quickly checking your screen resolution or pixel ratio for design work, confirming your battery health and charge, identifying your browser and OS for a support request, or seeing how many CPU cores and how much memory the browser can use. All values respect browser privacy limits.
Frequently asked questions
What information does this show?
Your battery level and charging status, screen resolution and pixel ratio, CPU core count, approximate memory, connection type, and your browser, operating system, language, and time zone — all detected locally by your browser.
How do I find my screen resolution?
The Display section shows your full screen resolution (like 1920 × 1080), the available area, your current viewport size, and the device pixel ratio for high-DPI screens.
Is the battery percentage accurate?
It comes straight from the browser's Battery Status API and updates live as your battery charges or drains, along with an estimate of the time to full or empty. Some browsers (notably Safari and Firefox) no longer expose battery info for privacy reasons, in which case it shows as unavailable.
Why does memory say 'approximate'?
Browsers only report device memory rounded to a coarse value (like 4 or 8 GB) to protect privacy, so it's a ballpark figure, not an exact amount. CPU cores reflect the number of logical processors available to the browser.
Is this the same as 'what is my browser'?
Yes — it includes your browser name and version, operating system, and full user agent string, so it doubles as a quick 'what browser am I using' and 'what is my screen resolution' check.
Does it detect my exact location or hardware model?
No. Browsers deliberately limit this information for privacy. You'll see general details like OS and screen size, but not your precise device model, serial number, or location.
Is any of this sent to a server?
No. Everything is read and displayed entirely in your browser. Nothing is logged, stored, or uploaded.
Learn more
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