Screen Resolution Checker

Check your screen resolution and display info online free. View your screen specs instantly.

Check your screen resolution, viewport size, and device pixel ratio in real time. Essential for web developers and QA testers working on responsive design. Understand how device pixels differ from CSS pixels, then use the numbers to set sensible breakpoints and verify layouts across screen sizes.

What the Tool Displays

You see the physical screen resolution reported by the operating system, the current browser viewport dimensions, the device pixel ratio, and the browser window size. Each value answers a different question, so distinguishing them prevents wrong breakpoint decisions during development.

Device Pixels vs CSS Pixels

Device pixels are the physical dots on the panel; CSS pixels are the abstract units your stylesheets use. A phone with a ratio of 3 packs three device pixels into every CSS pixel, which is why the same layout looks sharper on retina hardware without larger CSS sizes. Logging all three values together clarifies whether an issue comes from hardware density or the viewport itself.

  • Device pixels: raw hardware grid
  • CSS pixels: units used in stylesheets
  • Pixel ratio: device pixels per CSS pixel

Setting Responsive Breakpoints

Observe where your layout actually breaks by resizing the window and noting viewport widths: narrow phones, large tablets, laptops, and wide monitors. Encode those widths as media query breakpoints rather than copying arbitrary numbers from a tutorial that target different content and device generations.

Testing Methodology

Check layouts at real device sizes, combine with browser device emulation for quick sweeps, and test at browser zoom levels including 200 percent. Remember that toolbars, bookmarks, and notches reduce usable viewport height, which affects sticky headers and full-screen sections. Re-measure after installing browser extensions, since side panels and toolbars quietly shrink the space your layout can use.

Common Gotchas

External monitors report their own resolution, not the laptop panel you are using. Operating system scaling settings can shrink effective desktop space, and zoom changes CSS pixel calculations. Reopen the tool after changing display settings to capture current values.

When troubleshooting blurry text or unexpected layout shifts, compare the reported device pixel ratio with your operating system scaling setting; mismatches between the two are a frequent cause of soft rendering on Windows laptops.

Frequently Asked Questions

What is the Screen Resolution Checker?

Shorix Screen Resolution Checker displays your display size, pixel density, and device information.

Is this tool free to use?

Yes, Shorix Screen Resolution Checker is completely free with instant results.

Is my device information stored?

No, Shorix reads screen properties locally without saving any device data.

What details does it show?

Shorix displays resolution, color depth, pixel ratio, viewport size, and screen orientation.

Can I check for responsive design?

Yes, Shorix helps test how your screen appears at different resolutions.

Does it work on mobile devices?

Yes, Shorix detects screen properties on phones, tablets, and desktop monitors.