Screen Resolution Detector: Find Your Display Info Instantly
Learn how to detect your screen resolution, device pixel ratio, and viewport size. Essential for responsive design and bug reports.
# Screen Resolution Detector: Find Your Display Info Instantly
When you are debugging a CSS layout, writing a bug report, or configuring a responsive breakpoint, the first question is always: what resolution am I actually looking at? FreeToolJet's Screen Resolution Detector gives you the answer instantly — no console commands needed.
What Information Does It Show?
The detector reveals seven key properties:
- Screen Resolution: The logical resolution of your display (e.g. 1920 × 1080).
- Available Screen: The usable area after OS taskbars and dock bars.
- Physical Pixels: The actual pixel count, accounting for device pixel ratio.
- Device Pixel Ratio (DPR): How many physical pixels map to one CSS pixel. Retina displays typically have a DPR of 2 or 3.
- Browser Window: The current viewport dimensions.
- Color Depth & Pixel Depth: The display's color capabilities.
- Orientation: Whether the screen is in landscape or portrait mode.
Why DPR Matters
A 13-inch MacBook reports a logical resolution of 1440 × 900 but has a DPR of 2, meaning it renders 2880 × 1800 physical pixels. If you are exporting images for the web, always multiply by DPR to avoid blurry results on Retina screens.
Use Cases
- Bug reports: Paste your display info into tickets so developers can reproduce layout issues.
- Responsive testing: Resize the browser and watch the viewport value update in real time.
- Design handoff: Confirm that designers and developers are looking at the same resolution.
Related Tools
- Color Converter — Convert colors between formats for your display
- Image Resizer — Resize images for different screen densities
- CSS Gradient Generator — Build gradients that look great on any display
Want more tools? Explore our full collection at FreeToolJet - we're constantly adding new utilities based on developer feedback.