Spanright Multi-Monitor Wallpaper Alignment Tool

Spanright is a single-page web app that lets you create pixel-perfect spanning wallpapers for non-standard multi-monitor setups. Most operating systems concatenate monitors by pixel resolution when spanning wallpapers, ignoring physical size differences — Spanright solves this by letting you model your physical desk layout, position a source image across it, and export a stitched wallpaper that looks seamless across all your screens. Works for Windows, macOS, and Linux. If you have monitors of different sizes or resolutions (e.g., a 15.6" laptop next to a 27" QHD desktop), spanning a single wallpaper produces misaligned images. The image gets split based on raw pixel counts, not physical dimensions. A mountain peak that should flow across both screens ends up with a jarring offset. Spanright operates in physical space (inches/cm), so you arrange monitors as they actually sit on your desk. It then renders each monitor's portion of the source image at the correct PPI, producing one output image that your OS can span correctly. Spanright Multi-Monitor Wallpaper Alignment Tool is the open-source project andresjmorales/spanright (https://github.com/andresjmorales/spanright) by andresjmorales, released under MIT. Ion packages it unmodified from commit c166ed57d3f6, adding only a manifest, an icon and a storage compatibility script.

Written by andresjmorales, published to Oikou by Ben Grande.

• ★ 22 stars on GitHub
• Licence: MIT
• Built from commit c166ed57d3f6

View the repository on GitHub

Not rated. Nobody has said who this app is suitable for, so Personal Clouds and the Oikou app treat it as 18+.

Internet

It asks to reach nothing on the internet.

Personal Cloud tools

• Keep a database of its own on your Personal Cloud ion.db

Notifications

It does not send push notifications.

Storage

Up to 16 MB on your Personal Cloud.

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