What each value means
- Window Size: The size of your browser's viewing area.
- Screen Resolution: Your screen's size in the units the browser uses. With display scaling on, this is smaller than the panel's native resolution: a 2560x1440 screen at 125% scaling shows as 2048x1152.
- Pixel Ratio (DPI): Your display scaling. 1.00x is 100%, 1.25x is 125%, 2.00x is typical for Retina and other high-DPI screens. Multiply it by the screen resolution to get the native resolution. Browser zoom changes it too, so reset zoom (Ctrl+0 or Cmd+0) first.
- Available Space: The screen area left after the taskbar or dock.
- Color Depth: 24-bit is standard. 30-bit usually means a 10-bit or HDR display is active.
- CPU Cores (Logical): The number of threads your processor can run at once.
- RAM (Approx GB): A rounded figure. Browsers deliberately cap and round it for privacy, so it can read lower than your actual memory.
- GPU Renderer and Vendor: The graphics processor your browser is using.
Handy checks
- Is my monitor at its native resolution?: Multiply Screen Resolution by Pixel Ratio and compare it with your monitor's specifications.
- Which GPU is my browser using?: On laptops with two graphics chips, GPU Renderer shows whether the browser is using the integrated or the dedicated one.
- Identify a device remotely: Ask someone to open this page and read the values out to you; it's quicker than walking them through system settings.
Common Questions
A value is missing or says 'Not Supported'
- Browser support: Not every browser exposes every value. Memory, for example, isn't available in Firefox or Safari.
- Privacy protections: Some browsers and extensions hide or fake hardware details to prevent fingerprinting. 'Masked/Unknown' for the GPU is a common result.
Platform says Win32 on 64-bit Windows
- Expected: Browsers report 'Win32' on all versions of Windows for compatibility. It doesn't mean your system is 32-bit.
Use this page for a quick look at what your device and browser report, then dig into your system settings if something doesn't match.
Frequently asked questions
Why is a value missing?
Some browsers don't expose every property, or restrict it to protect privacy.
Is this information sent to your server?
No. Everything is read and displayed in your browser.