Screen Resolution Checker
See your current viewport and screen size, device pixel ratio, color depth, orientation, and more. Useful for responsive design and bug reports.
Screen Resolution Checker — When you are debugging a responsive design issue or filing a bug report, the first thing an engineer will ask is "what is your screen size?". This tool answers that and more — viewport size, screen size, device pixel ratio, color depth, language, time zone, touch support, and online status.
Reading display info happens in your browser. Nothing is uploaded.
What is screen resolution checker?
When you are debugging a responsive design issue or filing a bug report, the first thing an engineer will ask is "what is your screen size?". This tool answers that and more — viewport size, screen size, device pixel ratio, color depth, language, time zone, touch support, and online status.
Useful for designers checking what users actually see, developers filing bug reports, and anyone curious about their own setup.
How to use it
-
Open the page
The tool reads your screen and viewport on load.
-
Resize or rotate
Resize the window or rotate your device to see the values update.
Examples
A typical desktop
1920×1080 viewport, 1× pixel ratio, landscape, no touch.
Result: Width 1920 · Height 1080 · Ratio 1.0 · Landscape
A typical phone
390×844 viewport, 3× pixel ratio, portrait, touch supported.
Result: Width 390 · Height 844 · Ratio 3.0 · Portrait · Touch
Frequently asked questions
Related tools
User Agent Parser
Identify the browser, OS, and device type from any user-agent string. Detects bots and crawlers too.
JSON Formatter
Format, beautify, and validate JSON with adjustable indentation — instantly in your browser.
HTTP Status Code Lookup
Look up any HTTP status code from 100 to 511 with plain-language explanations, searchable and filterable by category.