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Screen Resolution
Total monitor size
Browser Viewport
Current window size
Other Display Properties
Resize your browser window to see the viewport size update in real-time.
100% Private & Secure
ToolNGame is designed with a "Privacy First" philosophy. This Browser Resolution & Viewport Info runs entirely in your browser using local JavaScript. Your files and data are never uploaded to our servers, ensuring your sensitive information stays exactly where it belongs—on your device.
How to use Browser Resolution & Viewport Info?
Visit this page on your device
Open this tool in your desktop browser, tablet, or mobile device. The tool auto-detects your device's viewport size.
View your screen info
See your display resolution, viewport size, device pixel ratio, screen orientation, and browser capabilities instantly. Click "Refresh" to update.
Test responsive design
Use this info to understand your device's dimensions. Resize your browser to test different viewport widths and watch the values change in real-time.
Frequently Asked Questions
What is the difference between resolution and viewport?
Resolution (screen size) is your display's physical size in pixels. Viewport is the visible area of your browser window, which may be smaller due to browser UI (tabs, address bar) and scrollbars. Designers care more about viewport.
What is device pixel ratio?
Device Pixel Ratio (DPR) is the ratio of physical pixels to CSS pixels. Retina displays have DPR 2 or higher, meaning 2 physical pixels per CSS pixel. Important for sharp images and media queries in CSS.
Why is my viewport smaller than my screen resolution?
Browser chrome (tabs, address bar, scrollbars) takes up space. Maximizing your browser window increases viewport, but rarely equals full screen resolution. This is normal and expected.
How do I test responsive design?
Resize your browser window and watch viewport dimensions change. Alternatively, use browser DevTools (F12) to simulate mobile devices. This tool is useful for understanding YOUR device's actual dimensions.
What viewport sizes should I design for?
Common breakpoints: mobile (320-480px), tablet (768-1024px), desktop (1200px+). Design mobile-first, then expand for larger screens. Use media queries to adapt layouts.
Why do some apps ask for permission to access screen info?
Screen orientation (portrait vs landscape) and pixel ratio affect layouts. Web apps can detect these without permission via the Screen API. This tool reads them safely and locally.
Can I use this data for analytics?
Yes. Viewport size tells you how wide your user's browser is, which is critical for understanding how your website displays. Share this data to improve responsive design decisions.
What does "orientation" mean?
Portrait means taller than wide (height > width), landscape means wider than tall (width > height). Mobile devices switch between them. Your website should adapt smoothly using CSS media queries.
Why choose ToolNGame for Browser Resolution & Viewport Info?
Privacy-First Architecture
Most online utilities require you to upload sensitive data to their servers for processing. At ToolNGame, we've architected our Browser Resolution & Viewport Info to run entirely within your web browser. This means your data never leaves your computer, providing a level of security that traditional cloud-based tools simply cannot match.
Unmatched Performance
By leveraging the power of modern Web APIs and optimized JavaScript, our tools deliver results instantly. There's no waiting for server responses or file uploads. Whether you're a developer needing a quick code fix or a student calculating grades, ToolNGame ensures your workflow remains uninterrupted.
No Ads, No Tracking, No Fluff
We believe that the best tools are the ones that get out of your way. That's why ToolNGame is built with a minimalist, high-performance interface. No intrusive pop-ups, no tracking scripts, and no unnecessary bloat—just the powerful utilities you need, exactly when you need them.
A Growing Ecosystem
The Browser Resolution & Viewport Info is just one part of our comprehensive suite. From advanced PDF manipulation and image compression to coding beautifiers and financial calculators, ToolNGame is designed to be the ultimate bookmark for productivity. We constantly update our algorithms to ensure the highest accuracy and compatibility.
Technical Specifications & Reliability
Our platform is built using a modern stack focused on client-side efficiency. By utilizing Vanilla JavaScript instead of heavy frameworks, we ensure that every tool is lightweight and compatible with all modern browsers, including Chrome, Firefox, Safari, and Edge. This commitment to technical excellence is why thousands of professionals trust ToolNGame every day for their mission-critical tasks.