Screen Resolution Checker
Check your screen resolution, window size, device pixel ratio, and display details. All values update live as you resize.
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Install Zumie — FreeCheck Your Display Resolution, DPR & Window Size
Instantly see your screen resolution, browser window size, device pixel ratio, effective resolution, orientation, color depth, and available screen area. Useful for planning screen recordings or testing responsive designs.
Features
Screen Resolution
See your display's native resolution in pixels (e.g., 1920 x 1080).
Browser Window Size
Check the current width and height of your browser viewport.
Device Pixel Ratio
Know your DPR to understand how CSS pixels map to physical pixels on your display.
Effective Resolution
See the actual rendered resolution (screen resolution x DPR) for Retina and HiDPI displays.
Orientation & Color Depth
Check whether your display is in landscape or portrait mode and its color bit depth.
Recording Tips
Get practical advice on which resolution to record at based on your current display.
How to Use Screen Resolution Checker
Open the tool
Visit the page and your display information is detected automatically — no interaction needed.
Review your display details
Check your screen resolution, window size, DPR, and other display properties.
Use the info for recording
Decide on the best recording resolution and window size before starting a screen capture.
Frequently Asked Questions
Why does my resolution look different from my monitor spec?
Your OS may use display scaling (e.g., 150%). The tool shows CSS pixels, which may differ from your native hardware resolution. Check the effective resolution for the true pixel count.
What is device pixel ratio (DPR)?
DPR is the ratio of physical pixels to CSS pixels. A DPR of 2 means each CSS pixel is rendered with 2x2 physical pixels, common on Retina displays.
Does this tool work on mobile?
Yes. It detects the resolution, viewport size, and DPR of any device with a modern browser.
What resolution should I record my screen at?
For most screen recordings, 1080p (1920 x 1080) is the sweet spot — sharp enough for detail, small enough for easy sharing. Record at 1440p or 4K only if your audience needs it.