What Screen Resolution Do I Have?

Your laptop can report several different size numbers: physical screen resolution, browser viewport and device pixel ratio. They describe different parts of how content is displayed.

Check your current screen values

Open the Screen Resolution to see the resolution reported by your browser, your current viewport, device pixel ratio and colour depth. These values update when you resize the browser window or move it between displays.

What screen resolution means

Resolution describes the pixel grid a display uses, such as 1920 × 1080 or 2560 × 1440. On many laptops, the operating system also applies scaling so text and buttons remain comfortable to read on a high-density display.

Why the browser viewport is smaller

A browser window does not usually occupy every physical pixel of the screen. Toolbars, window borders and operating-system scaling reduce the area available to a webpage. That usable CSS area is the viewport.

What device pixel ratio means

Device pixel ratio describes how many physical display pixels may be used for one CSS pixel. High-density screens can therefore look sharp even when the browser reports a viewport width much smaller than the panel’s native pixel width.

Should you use the native resolution?

LCD and OLED laptop panels are normally sharpest at their native resolution. If text is too small, changing display scaling is usually preferable to selecting a lower non-native resolution, because scaling keeps the panel’s full pixel detail.

Check the screen itself

If you are investigating display quality rather than size, use the Dead Pixel Test for full-screen colour checks. The Device Information can also record basic browser and hardware hints when troubleshooting an external monitor.

Related guides

Useful MyLaptopTools checks

Use these free browser tools to check the parts of your setup discussed in this guide: