# Remove unused resources from your Web build

> Remove unused packages and shader variants from your build.

Remove unused packages, shaders, and engine code from a project to make the build smaller. A smaller build reduces application load times and improves the performance of your application.

## Remove or disable unused packages

Unused packages might affect the final output size of the build. Remove or disable all packages the project doesn’t use. This includes [built-in packages](/engine/6000.7/manual/packages-list/packages-all/pack-build.md) and packages that might be enabled by default, such as the [Input System package](https://docs.unity3d.com/Packages/com.unity.inputsystem@latest?subfolder=/manual/index.html), which can significantly increase the build size if it’s not removed.

You can use the Package Manager window to determine which packages are installed or enabled for your project:

* Select the **All Packages** view and check the [list panel](/engine/6000.7/manual/packages-list/upm-ui-window/upm-ui-list-panel/upm-ui-list.md) for packages that are installed as direct and indirect [dependencies](/engine/6000.7/manual/packages-list/dependencies-lp/upm-dependencies.md). You can also use the [details panel](/engine/6000.7/manual/packages-list/upm-ui-window/upm-ui-details.md) to get more information about package dependencies.
* Select the **Built-in** view for built-in packages that are enabled in your project.

To learn which packages your project needs, review the [project manifest file](/engine/6000.7/manual/packages-list/managing-packages-manifest/upm-manifest-prj.md) located at `Packages/manifest.json`.

To remove a package, refer to [Remove a UPM package from a project](/engine/6000.7/manual/packages-list/managing-packages-window/upm-ui-actions/upm-ui-remove.md).

To disable a built-in package, refer to [Disable a built-in package](/engine/6000.7/manual/packages-list/managing-packages-window/upm-ui-disable.md).

## Remove unused shader variants

Enable shader stripping to remove shader variants that aren't used in a scene. Shader stripping can reduce your build file size.

> **Important:**
>
> Test your application to make sure your unused shaders aren't referenced by other shaders.

To enable shader stripping, refer to [Graphics](/engine/6000.7/manual/unity-editor/editor-settings-reference/comp-manager-group/class-graphics-settings.md#stripping).

## Remove unused engine code

Use the [Web Stripping Tool package](https://docs.unity3d.com/Packages/com.unity.web.stripping-tool@latest?subfolder=/manual/index.html) to identify and remove unused engine code from your build. This tool is useful for projects that don't use certain engine features, such as 3D graphics in a 2D game, allowing for a significant reduction in the final build size.

## Additional resources

* [Optimize your Web build](/engine/6000.7/manual/platform-specific/webgl/building-distribution/web-optimization.md)
* [Recommended Graphics settings to optimize your Web build](/engine/6000.7/manual/platform-specific/webgl/building-distribution/web-optimization/graphics.md)
* [Recommended Quality settings to optimize your Web build](/engine/6000.7/manual/platform-specific/webgl/building-distribution/web-optimization/quality.md)
* [Recommended Player settings to optimize your Web build](/engine/6000.7/manual/platform-specific/webgl/building-distribution/web-optimization/player.md)
* [Optimize Web platform for mobile](/engine/6000.7/manual/platform-specific/webgl/building-distribution/web-optimization-mobile.md)