What is lsfg-desktop?

LSFG-Desktop, also called Lossless Scaling, is a lightweight Windows application that upscales the visuals of any game or program and can generate extra video frames to make gameplay feel smoother, without needing new hardware. It combines two techniques: lossless integer scaling, which sharpens a lower resolution image when displayed on a bigger screen, and an AI based frame generation technology called LSFG, which creates extra in between frames so games can appear to run at a much higher frame rate than they actually render. The frame generation feature can multiply your effective frame rate by 2, 3, or 4 times. For upscaling, the tool offers multiple algorithms to choose from, including LS1, FSR 3.1, NIS, Anime4K, and CAS, along with image sharpening options so you can tune the look to your preference. It works across a wide range of graphics APIs, covering DirectX versions 9 through 12, Vulkan, and OpenGL, which means it can be applied to most games regardless of how they were built. The project's description also mentions the technology being adapted for handheld devices like the Steam Deck and for Android through a separate Vulkan based version. The application is distributed as a downloadable zip file rather than through an installer, and the README states it is compatible with Windows 10 and 11. A portable version is also available. The included troubleshooting table covers common problems: if the tool does not detect a game, switch that game to Borderless Windowed mode, visual artifacts can often be fixed by adjusting settings or switching modes, performance issues can be resolved by lowering the frame multiplier, antivirus warnings are addressed by adding the folder to exclusions, and a black screen may require running the app as Administrator and updating GPU drivers. The project is released under the MIT License, described in the README as shared for educational and technical purposes only.