The GitHub repository win-3.1-backgrounds by user andreasjansson hosts a curated collection of .bmp files that served as the tiled backgrounds for the classic Windows 3.1 operating system. The archive offers a straightforward download of the original image assets, preserving the look and feel of early Windows desktop environments.

Windows 3.1 relied on tiled backgrounds to fill the desktop canvas, a technique that required each image to repeat seamlessly across the screen. The .bmp format, with its uncompressed pixel data, made it easy for developers to tweak colors and patterns without complex rendering code. This simplicity contributed to the OS’s lightweight footprint.

Developers and hobbyists can use the archive to recreate authentic Windows 3.1 environments in emulators or virtual machines, or to study early UI design principles. The files also serve as a resource for retro‑style graphics projects, allowing designers to incorporate period‑accurate textures into modern applications or games.

Hosted on GitHub, the project remains freely available under an open‑source license, encouraging community contributions and preservation of legacy software artifacts. By keeping these background assets accessible, the repo supports both nostalgic exploration and technical education about early graphical operating systems.