Made by a guy who loves wallpapers and has two monitors. He couldn't find a tool that did exactly what he wanted… so he built one.
Dual & triple monitor wallpaper splitter
One image. Two or three monitors. Zero seams.
Choose two monitors or three, then split any picture into matched wallpapers that line up across your desk, even when the screens differ in resolution, sit at different heights, or have chunky bezels between them.
Free. Your images stay in this browser and are never uploaded.
What is Dual Monitor Pro?
Dual Monitor Pro is a free web app for anyone with two or three monitors who wants one picture to flow across every screen. It splits a single image into one wallpaper per monitor, each sized for that screen, and lines them up the way your screens actually sit on your desk. Unlike a simple “cut it in half” splitter, it handles monitors with different resolutions, screens mounted at different heights, any mix of landscape and portrait screens, and the bezel gaps between them.
How it works
- 1
Describe your screens
Two monitors or three, each landscape or portrait. Enter each resolution, and optionally its physical size in millimetres.
- 2
Arrange your desk
Drag the monitors to match real life: offsets, gaps and mismatched sizes all snap into place.
- 3
Frame your image
Drop in a PNG, JPEG, GIF or WebP, then pan and zoom one image across all your screens.
- 4
Download your wallpapers
Get one pixel-exact PNG per monitor at its native resolution, ready to set as wallpaper.
Got your files? Here's how to set a different wallpaper on each monitor in Windows 11, macOS and Linux.
Why the usual splitters don't line up
Mismatched resolutions
Cutting a wide image into equal halves or thirds only works when every screen is identical. Here each part is cropped and exported at its own monitor's native size, up to 16,384 px per edge.
Different heights
Drag a monitor up or down to match your desk, and the image shifts with it so the horizon stays level.
Bezel compensation
In Physical layout you enter real sizes in millimetres. The strip hidden behind the bezels is skipped, just like the demo above.
Different pixel densities
Mix a 4K screen with 1080p ones and Physical layout keeps objects the same real-world size on every screen.
Frequently asked questions
How do I make one wallpaper span two or three monitors?
Choose two or three monitors, enter each one's resolution, drag the screens into the same arrangement as your desk, choose an image and frame it across all of them, then download one PNG per monitor. Set each file on its matching screen (left, center, right), using Fill or Center so nothing is rescaled.
Does it work with monitors that have different resolutions?
Yes. Each wallpaper is exported at its own monitor's native resolution, for example 2560 × 1440 on one side and 1920 × 1080 on the other, and the image is cropped so it lines up where the screens meet.
What about the bezels and the gap between the screens?
Switch to Physical layout and enter each screen's visible width and height in millimetres plus the gap between the lit areas. The part of the picture that would fall behind the bezels is skipped, so lines and horizons continue straight across the gap.
Can the monitors be at different heights, or in portrait orientation?
Yes. Drag any monitor up or down to match a vertical offset, and switch each monitor between Landscape and Portrait independently, so any mix works: two landscape, one of each, or a portrait screen between two landscape ones. The layout editor snaps edges together and warns you about overlaps.
Are my images uploaded anywhere?
No. Images are decoded, cropped and exported entirely in your browser. Only your Google account ID is used, to remember your monitor layout on this device.
Which image formats are supported?
PNG, JPEG, GIF and WebP files up to 200.0 MB. Very large photos (over 50.0 MP) are scaled down automatically while keeping more detail than your screens need. JPEG rotation from the camera is applied automatically. For animated GIF or WebP files the first frame is used as a still, and transparent areas become black.
Is it free, and does it work on Windows, macOS and Linux?
It's free to use with a Google sign-in. The downloads are standard PNG files, so they work as wallpapers on Windows, macOS and Linux. The setup guide shows how to assign a different wallpaper to each monitor on each system.
Does it support three monitors?
Yes. It starts with two monitors; choose Add a third monitor to get a left, center and right screen. Each one gets its own wallpaper at its own native resolution and orientation, and the gaps between neighbouring screens are skipped like bezels.