Screen Resolution & Multi-Monitor Setup Diagnostic

Check exact screen resolution, hardware matrix specs, system scaling factor, and physical layout of all connected displays

Visual Display Layout Map

Primary Display Current Monitor Browser Window

Click to Display All Your Monitors

Grant browser access to build a precise visual map of your connected monitors, check physical resolution, and detect system scale factors.

Detailed Specifications of Detected Monitors

How to Check Monitor Resolution and Configure Dual Monitors Online

When using a PC, laptop, or multi-screen desktop setup, understanding display parameters is essential. Our online tool allows you to instantly check any screen’s resolution, physical matrix dimensions, system scale factor (Windows/macOS), and visualize how your monitors are arranged on your desktop.

Why Check Screen Resolution & Display Layout Online?

Verify Native Hardware Resolution: Ensure your monitor is running at its true physical resolution (Full HD 1920x1080, 2K 2560x1440, 4K 3840x2160, or Ultrawide 3440x1440).
Dual & Triple Monitor Placement: Understand which display is designated as Primary and how your mouse cursor transitions across screen borders.
System Scaling & DPR: Check DPI scale settings (100%, 125%, 150%, 200%) and see both physical pixels and logical CSS pixels side-by-side.
Dead Pixel & Color Testing: Quickly launch dead pixel and backlight bleed tests directly for any connected display.

Physical Resolution vs. Logical Resolution

Physical Resolution: The actual count of physical pixels on your monitor’s panel.
Logical Resolution: The virtual workspace dimensions used by your operating system and web browser.
Scale Factor (DPR): The multiplier between physical and logical pixels (1x = 100%, 1.25x = 125%, 1.5x = 150%, 2x = 200%).

How Multi-Monitor Detection Works

Modern browsers use the Window Management API to read the physical arrangement of each display on your desk (left, right, top, or center), generating an accurate real-time visual map.