What this page shows
Every website your browser opens can read some basic facts about your device, like your screen size and browser version. This page simply shows you that information in one tidy list. It's useful when you're checking a new laptop, asking for tech support, or wondering what graphics chip your computer has.
Understanding the results
- Screen resolution is measured in CSS pixels, which is how the browser sees your screen. On high-density screens, the physical resolution is higher.
- Device pixel ratio tells you how many real pixels make up one CSS pixel. A value of 2 or 3 means a sharp, high-density display, like most phones and Retina screens.
- CPU threads is the number of tasks your processor can run at once. It's often double the number of physical cores.
- Memory is rounded by the browser on purpose, for privacy, and capped at 8 GB in Chromium browsers. A computer with 16 GB will still show "8 GB or more".
- Graphics (GPU) is your graphics chip. Some browsers hide the exact model and show a general name instead.
When you need the full details
Browsers deliberately limit what websites can learn about your hardware. For exact figures, use your system's own tools:
- Windows: open Settings, then System, then About. For graphics, open Task Manager and check the Performance tab.
- Mac: open the Apple menu and choose About This Mac.
- iPhone and Android: look in Settings under About phone or General, then About.
Want to check your screen more closely? Try the refresh rate test or the dead pixel test.
Frequently asked questions
Why does it say 8 GB of memory when I have more?
Chromium-based browsers like Chrome and Edge round device memory and cap it at 8 GB for privacy. It means at least 8 GB. Check your system settings for the exact amount.
Why doesn't it show my exact graphics card?
Some browsers, especially Safari and Firefox, hide the exact GPU model to reduce fingerprinting. Use your system's settings to see the full name.
Is my screen resolution correct?
The first number is in CSS pixels, which can be smaller than your monitor's native resolution if you use display scaling. The physical resolution line multiplies it by your pixel ratio for a closer figure.
Is any of this information saved?
No. It's read in your browser and shown only to you.
Sources
- MDN Web Docs: Navigator.hardwareConcurrency
- MDN Web Docs: Navigator.deviceMemory
- MDN Web Docs: Window.devicePixelRatio
Results depend on your device, browser and settings. Nothing you test on this page is uploaded or stored.
Spotted a mistake? Email [email protected] and we'll check it.