Screen Resolution Tester
Your current screen and browser dimensions, updated in real time as you resize the window.
Live — updates on resize
Screen Resolution
—
Physical screen pixels
Browser Viewport
—
Current window size (CSS px)
Device Pixel Ratio
—
Physical ÷ CSS pixels
Colour Depth
—
Bits per pixel
Available Screen
—
Excluding taskbar/dock
Scroll Position
—
X × Y from top-left
Orientation
—
Portrait or landscape
Touch Support
—
Touch points available
Common breakpoints
Mobile
< 768px
< 768px
Tablet
768–1024px
768–1024px
Desktop
> 1024px
> 1024px
HD
1280px
1280px
Full HD
1920px
1920px
4K
3840px
3840px
Frequently asked questions
What is device pixel ratio?
Device Pixel Ratio (DPR) is the ratio of physical pixels to CSS pixels. A DPR of 2 means a Retina or HiDPI display — 2 physical pixels for every 1 CSS pixel. This affects image quality on high-density screens.
What is viewport vs screen resolution?
Screen resolution is the total physical display size. Viewport is the visible area of your browser window, which changes as you resize the window or zoom in/out.
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