Understanding Screen Metrics
Screen Resolution is the total number of pixels your physical monitor can display. Browser Viewport is the size of the actual visible area of the webpage inside your browser window, which can change as you resize it.
This tool shows you both, along with other key details. This information is essential for web designers and developers to test responsive designs and for anyone needing to know their display settings for support or configuration.
Key Features
Instant & Automatic
Detects and displays your screen information the moment the page loads. No clicks required.
Full Screen Resolution
Accurately shows the total pixel resolution of your physical monitor or device screen.
Live Viewport Size
Shows your current browser viewport size, which updates in real-time if you resize your window.
Device Pixel Ratio (DPR)
Detects your screen's DPR, an important metric for developers working with high-resolution displays like Retina.
Color Depth
Shows the color depth of your screen, indicating the number of bits used to represent the color of a single pixel.
Private & Secure
All detection happens locally in your browser. No personal information is sent to our servers.
Your Display Information
Detecting screen information...
Loading browser and device information...
How to Use
It's 100% Automatic!
There are no steps to follow. As soon as you load this page, the tool automatically detects your screen and browser information and displays it. If you resize your browser window, the "Browser Viewport" dimensions will update in real-time.
Understanding the Results
Screen Resolution
This is the total number of physical pixels on your monitor or device screen. This value is fixed and does not change when you resize your browser window.
Browser Viewport
This is the visible area of the webpage inside your browser. It is always smaller than your screen resolution because it doesn't include browser toolbars, scrollbars, or the OS taskbar. This is the "canvas" that web developers design for.
Device Pixel Ratio (DPR)
This measures the density of your screen's pixels. A DPR of `2` on a "Retina" display means it uses four physical pixels to render one logical CSS pixel, resulting in much sharper images and text.
Color Depth
This indicates how many colors your screen can display. A 24-bit color depth (the most common) means your screen can display approximately 16.7 million different colors.
Real World Applications
Web Design & Development
Developers use this information to understand the screen sizes and viewport dimensions of their users, helping them test and build responsive websites that work on every device.
Technical Support
When reporting a visual bug on a website, providing your screen resolution and viewport size can help support teams replicate and fix the issue much faster.
Graphic Design
Designers can check their own screen resolution to ensure they are creating graphics and wallpapers that will fit their display perfectly without stretching or pixelation.
Your Display, Demystified
This tool provides a complete and instant snapshot of your screen's technical specifications.
Refresh My InformationFrequently Asked Questions
What's the difference between Screen Resolution and Viewport?
Screen Resolution is the fixed pixel count of your entire physical screen. The Viewport is the visible area for web content inside your browser window. The viewport is usually smaller than the screen resolution due to browser toolbars, scrollbars, and the OS taskbar. Resizing your browser window only changes the viewport, not your screen resolution.
What is Device Pixel Ratio (DPR)?
DPR is the ratio between physical pixels on the screen and logical (CSS) pixels. A standard display has a DPR of 1. A high-resolution display (like a Retina screen) might have a DPR of 2 or more, meaning it uses four or more physical pixels to render what is treated as a single pixel by the CSS. This results in sharper text and images.
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Conclusion
Our Free "What Is My Screen Resolution?" tool is a simple yet powerful utility for anyone who uses the web. By automatically detecting and clearly presenting key display metrics like screen resolution, browser viewport, and device pixel ratio, it provides instant clarity for both technical and non-technical users. It's an essential tool for developers building responsive websites and a handy utility for anyone needing to know their screen's specifications.
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