Free • Open Source • Native macOS App
SpreadPaper is a native macOS utility that lets you use a single high-resolution image as a wallpaper that seamlessly spans across all your connected monitors. No more dealing with separate wallpapers for each display or awkward cropping – just drag, position, and apply.
Perfect for:
- Multi-monitor setups with 2, 3, or more displays
- Ultra-wide panoramic images that deserve to be displayed in their full glory
- Creative professionals who want a cohesive desktop aesthetic
- Anyone tired of macOS's limited multi-monitor wallpaper options
Intuitive drag-and-drop interface with live preview of your wallpaper across all displays
Seamlessly spread a single wallpaper across two monitors
Scale up to three or more displays with perfect continuity
Automatically syncs with your macOS display arrangement for accurate positioning
Save your favorite configurations as presets for quick switching
✨ Visual Positioning – Drag and position your wallpaper exactly where you want it across all displays
🎯 Live Preview – See exactly how your wallpaper will look before applying it
🔄 Flip & Scale – Flip horizontally and zoom in/out to get the perfect fit
💾 Save Presets – Save your favorite wallpaper configurations for quick switching
🖥️ Multi-Monitor Smart – Automatically detects all connected displays and their arrangement
🎨 High Quality – Renders at native resolution for each display with optimal quality
Because SpreadPaper is a free, open-source project and not signed with a paid Apple Developer ID ($99/year), macOS Gatekeeper will flag it on the first launch. This is normal behavior for FOSS apps.
- Download the
SpreadPaper.dmg(or.zip) from the Releases page. - Open the DMG and drag SpreadPaper to your Applications folder.
- Right-Click (or Control-Click) the SpreadPaper app icon in your Applications folder.
- Select Open from the menu.
- A dialog will appear saying "SpreadPaper cannot be opened because the developer cannot be verified" — Click Open in this dialog.
You only need to do this once. Future launches will work normally.
- Launch SpreadPaper and click "Open" or drag an image onto the window
- Position your wallpaper by dragging it around the preview canvas
- Adjust the zoom using the slider or +/- buttons to get the perfect fit
- Flip if needed to mirror your image horizontally
- Click "Apply Wallpaper" to set it across all your monitors
- Save as preset (optional) to quickly reapply this configuration later
- macOS 26.0 or later
- Apple Silicon Mac
- Multiple monitors (recommended, but works with single displays too)
Note: This project is compiled for and tested on macOS 26 with Apple Silicon. If you are using an older macOS version or Intel Mac and would like support, please open a feature request.
# Clone the repository
git clone https://github.com/spreadpaper/SpreadPaper.git
cd SpreadPaper
# Open in Xcode
open SpreadPaper.xcodeproj
# Build and run (⌘R)Contributions are welcome! Feel free to:
- Download the latest release
- Report bugs
- Request features
- Submit pull requests
SpreadPaper is free and open source software licensed under the MIT License.