Device Resolution Checker — Screen Size & Pixel Density
Find out your exact screen resolution, pixel density (DPR), and device class in one click. The checker reports physical pixels, CSS pixels, touch support, and orientation — and compares your display against popular phones, tablets, laptops, and monitors. Everything runs 100% in your browser with live updates when you rotate or resize your screen.
Designers and developers use this to confirm breakpoint behavior, choose responsive image sizes, and verify that their layouts render correctly at the visitor's real pixel ratio.
Device Resolution FAQ
Does this work on all browsers?
Our mobile testing tools work best on modern browsers (Chrome, Firefox, Safari, Edge). Some features may not be available on older browsers that lack Web API support.
Is my device data collected?
No. All device information is read locally from your browser APIs. No data is transmitted to our servers or stored anywhere.
Is it free to use?
Yes. This tool is completely free with no usage limits, sign-up requirements, or hidden fees.