Headless Builder v1.14.0 is a game resource pack designed to optimize Unity headless builds and dedicated server deployments. It significantly reduces CPU, RAM, and disk usage by stripping unnecessary assets such as textures, sounds, and videos. The tool disables all graphics rendering—including lighting and shaders—and disables audio rendering. It also skips shader variant compilation and lightmap baking, improving performance without requiring configuration.
Headless Builder offers an out-of-the-box experience, enabling both regular and headless builds within the same project, with support for multiple build profiles and extensive documentation. The solution is highly configurable, cross-platform, and supports batch building and Unity Cloud Build. It includes dedicated server build targeting and allows developers to strip debug log messages or output logs to the console instead of files. A readme file is automatically generated for each build.
The tool is fully extensible, offering script functions, callbacks, and define directives. Developers can execute specific code only during headless builds, with simple examples and full source code provided. It resolves common Unity build issues such as “Global Illumination requires a graphics device to render albedo,” “Cannot find card 0,” and “Unknown PCM default.”
Headless Builder is compatible with Unity 2017, 2018, 2019, 2020, 2021, and 2022.