Spanpaper

Configure Monitors from LEFT to RIGHT

Resolution

Your monitor's resolution. Choose a preset or enter pixels manually.

Size (inches)

The physical size of your monitor in inches (diagonal measurement).

Aspect Width and Height

The aspect ratio of your monitor (e.g., 16 and 9 for a 16:9 display).

Bottom Offset

The physical offset to the lowest monitor in inches. Set the lowest monitor to 0, and others to how much higher their bottoms are.

Gap after monitor

The size of the gap between this monitor and the next one in inches.

Windows Display Info

For the wallpaper to line up cleanly where two monitors meet, this tool needs to know exactly how your monitors sit next to each other, specifically, how many pixels each one is shifted up or down compared to the others. Windows lets you drag monitors into place in Display Settings, but it doesn't snap them to a clean alignment: nearly every setup has a small vertical offset between monitors that you can't spot by eye. Pasting the script output below gives the tool those exact numbers, so the image doesn't break or skip where your monitors meet.

Open PowerShell and paste this command:

Copy

# Tell Windows to report real per-monitor pixels (not DPI-scaled values),
# then list each monitor's resolution and virtual-desktop position as WxH+X+Y.
Add-Type '[System.Runtime.InteropServices.DllImport("user32.dll")] public static extern bool SetProcessDpiAwarenessContext(System.IntPtr v);' -Name D -Namespace W
[W.D]::SetProcessDpiAwarenessContext([System.IntPtr]::new(-4)) | Out-Null  # -4 = PER_MONITOR_AWARE_V2
Add-Type -AssemblyName System.Windows.Forms
[System.Windows.Forms.Screen]::AllScreens | %{ "$($_.Bounds.Width)x$($_.Bounds.Height)+$($_.Bounds.X)+$($_.Bounds.Y)" }

Paste the output into the "Windows Display Info" field below. It will look something like:

2560x1440+0+720
3840x2160+2560+0
1920x1080+6400+1080