Check Your Screen Resolution Online
Knowing your exact screen resolution is important for web development, troubleshooting display issues, meeting software requirements, and setting up design workspaces. Our screen resolution checker displays your full screen resolution, browser viewport size, device pixel ratio (for Retina/HiDPI displays), color depth, and other display information — all detected automatically from your browser.
Try Emoji Picker NowHow to Check Your Screen Resolution
- 1 Open the Screen Resolution Checker tool.
- 2 Your screen resolution, viewport size, and display details are shown automatically.
- 3 Resize your browser window to see viewport dimensions update in real time.
- 4 Note your device pixel ratio for Retina display detection.
- 5 Use the information for development, troubleshooting, or system requirements.
Why Check Your Screen Resolution
- Instantly see your full screen resolution and browser viewport size.
- Detect Retina/HiDPI displays via device pixel ratio.
- Useful for web developers testing responsive designs.
- Check color depth and orientation information.
- No installation — just open the page and read your specs.
Ready to Get Started?
Our Emoji Picker is free, fast, and works right in your browser. No sign-up needed.
Use Emoji Picker FreeFrequently Asked Questions
Screen resolution is the total pixel count of your monitor (e.g., 1920x1080). Viewport size is the area available to the web page inside your browser window, which is smaller due to browser chrome (toolbars, tabs).
Device pixel ratio (DPR) is the ratio between physical pixels and CSS pixels. A DPR of 2 means the screen has twice the pixel density (Retina/HiDPI), making text and images appear sharper.
Your operating system may be using display scaling (e.g., 150% on Windows). The reported CSS resolution will differ from the physical resolution. Check the device pixel ratio to see the scaling factor.