Texture Import Settings - Unity Manual

The Texture Import Settings window defines how Unity imports images from your project’s Assets folder into the Unity Editor.

Preferences - Unity Manual

Unity - Manual: Quality

SketchUp Import Settings window - Unity Manual

The Unity preset system / Setting up default import settings

Unity - Manual: Textures

Unity - Manual: Build Settings

Unity - Manual: Quality Settings

Unity - Import settings for Meshes

Unity - Manual: The Inspector window

Unity - Manual: Cursor Import Settings reference