What's My Screen Resolution
Display your current screen resolution
Screen Resolution Detector
Display your current screen resolution
Screen Resolution
SD
Privacy & Security
All screen detection happens entirely in your browser using standard JavaScript APIs. No screen information is transmitted to any server, stored in databases, or shared with third parties. Your display specifications remain completely private and secure.
About This Screen Resolution Detector
Discover everything about your display with our comprehensive screen resolution detector. Whether you're a web developer testing responsive designs, a designer checking pixel density, or simply curious about your monitor specifications, this tool provides instant, accurate information about your screen dimensions, viewport size, color depth, and device pixel ratio. Perfect for troubleshooting display issues, optimizing web layouts, or verifying monitor specs.
Key Features
Screen Resolution Detection
Displays your full screen width and height in pixels
Viewport Dimensions
Shows browser viewport size for responsive design testing
Device Pixel Ratio
Detects pixel density (DPR) for retina and high-DPI displays
Color Depth Information
Shows color bit depth and available color range
Orientation Detection
Identifies portrait or landscape screen orientation
Real-Time Updates
Automatically updates when you resize your browser window
Aspect Ratio Calculator
Calculates and displays your screen's aspect ratio
Multi-Monitor Support
Detects individual screen specs for multi-display setups
Device Information
Shows operating system, browser, and device type
Copy to Clipboard
Easily copy all specifications for documentation or support
How to Use the Screen Resolution Detector
Open the Tool
Navigate to the screen resolution detector - your specs appear instantly
View Your Specifications
See complete display information including resolution, viewport, and pixel density
Test Responsive Layouts
Resize your browser window to see how viewport dimensions change in real-time
Copy or Export Data
Use the copy button to save specifications for documentation or troubleshooting
Frequently Asked Questions
What's the difference between screen resolution and viewport size?
Screen resolution is your entire display's pixel dimensions (e.g., 1920x1080), while viewport size is the visible area inside your browser window. Viewport changes when you resize the browser, but screen resolution remains constant.
What does device pixel ratio (DPR) mean?
Device pixel ratio indicates how many physical pixels represent one CSS pixel. A DPR of 2 (common on retina displays) means 2x2 = 4 physical pixels per CSS pixel, resulting in sharper images. Higher DPR values mean higher pixel density.
Why does my screen show different resolutions in different apps?
Some operating systems use display scaling to make text and UI elements larger. Your physical resolution stays the same, but the effective (scaled) resolution may differ. Our tool shows both physical and effective resolutions.
How accurate is this screen resolution detector?
Extremely accurate. The tool uses JavaScript's native screen detection APIs to read hardware specifications directly from your device. Results are real-time and reflect actual display capabilities.
Can this tool detect multiple monitors?
Yes, it detects the primary display you're viewing on. For multi-monitor setups, open the tool on each screen to see individual specifications. Total screen space across all monitors is also calculated.
What is color depth and why does it matter?
Color depth (measured in bits) determines how many colors your screen can display. 24-bit displays show 16.7 million colors, while 32-bit adds an alpha channel. Higher color depth means more accurate color reproduction.
Does this work on mobile devices?
Absolutely! The tool works perfectly on smartphones and tablets, showing mobile screen resolution, orientation, and pixel density. It's especially useful for testing responsive mobile designs.
Is my screen resolution data stored or shared?
No. All detection happens locally in your browser using JavaScript. No data is sent to any server, logged, or stored. Your privacy is completely protected.
Common Use Cases
- Responsive Web Design Testing: Verify how websites adapt to different viewport sizes and resolutions
- Monitor Specification Verification: Confirm your display's actual resolution matches advertised specs
- High-DPI Display Detection: Check if your device has a retina or high-density display
- Multi-Monitor Setup Configuration: Identify individual screen resolutions in multi-display environments
- Technical Support Documentation: Provide accurate display specs when troubleshooting with support teams
- Graphics and Design Work: Ensure pixel-perfect designs by knowing exact screen dimensions
- Gaming Configuration: Verify native resolution for optimal gaming performance
- Video Content Optimization: Match video resolutions to your display capabilities
Why Use Our Screen Resolution Detector?
Our screen resolution detector provides comprehensive, real-time display information that goes beyond basic resolution numbers. Whether you're debugging responsive layouts, verifying hardware specs, or optimizing visual content, you get instant access to all critical display metrics. The tool is completely free, requires no installation or registration, and works on any device. With real-time viewport tracking and detailed pixel density information, it's the most complete screen analysis tool available for developers, designers, and tech enthusiasts.