Screen Resolution
Detect your screen resolution, viewport size, device pixel ratio, color depth, and more online for free. See all your display information at a glance.
Runs entirely in your browser — files never uploaded
How to use Screen Resolution
- 1. Open the tool. All display information is detected automatically.
- 2. Resize your window. Values update in real time as you resize the browser.
- 3. Check breakpoints. See which Tailwind CSS breakpoints are currently active.
FAQ
Why is the viewport size different from screen resolution?
Screen resolution is the total display size, while viewport is the usable area inside the browser window excluding toolbars and scrollbars.
What is device pixel ratio?
It is the ratio between physical pixels and CSS pixels. A value of 2 means the display uses 2 physical pixels for every CSS pixel (common on Retina/HiDPI screens).
Does this tool send my data anywhere?
No. All detection happens in your browser using standard JavaScript APIs.
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