Screen Resolution Checker
Detect your screen resolution, viewport size, browser window dimensions, DPR, orientation, fullscreen status, and more instantly. Everything runs locally in your browser without any API.
Visual Screen Preview
The outer frame shows your full screen and the inner frame shows the current viewport.
Viewport vs Screen Charts
These bars compare how much of the total screen size your current viewport occupies.
- Zoom is an estimate and can vary by browser.
- Fullscreen and orientation refresh automatically when supported.
- Touch and Retina detection are based on browser capabilities and DPR.
All Results
Search through the detected screen, browser, and display properties.
| Property | Value | Category |
|---|
Live Display Information
Values update automatically when the window size, orientation, or fullscreen state changes.
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FAQs
What does the Screen Resolution Checker show?
It detects screen resolution, available screen size, viewport size, browser window dimensions, DPR, color depth, orientation, fullscreen status, touch support, and more directly in your browser.
Does this tool use any API?
No. It reads display information from standard browser properties and works entirely on the client side without external APIs.
What is screen resolution?
Screen resolution is the total number of pixels available on your display, typically shown as width by height such as 1920 x 1080.
What is viewport size?
Viewport size is the visible area inside your browser where web pages are rendered. It can differ from your full screen resolution.
What is device pixel ratio?
Device pixel ratio compares physical display pixels to CSS pixels. High-DPR screens are often called Retina or high-density displays.
Can this tool detect zoom level?
It provides a best-effort zoom estimate using available browser properties, but exact zoom reporting can vary by browser and operating system.
How is orientation detected?
Orientation is estimated from screen dimensions and supported browser orientation properties, then shown as portrait or landscape.
What is the difference between browser window size and viewport size?
Browser window size includes the full browser frame, while viewport size measures only the content area used to display the page.
Can I export or share the results?
Yes. You can copy the results, print them, share them when supported, refresh the values, and export them as a TXT file.
Who uses a screen resolution checker?
Designers, developers, testers, marketers, support teams, and everyday users use it to verify display and browser sizing details quickly.