The Unity UGUI Guide on
Canvas & Canvas Scaler

This 25-page guide takes you into everything you need to know about Unity’s Canvas system. You’ll learn why the Canvas is the heart of all your UI elements, how different render modes (ScreenSpace-Overlay, ScreenSpace-Camera, and World Space) affect your game’s look and feel, and when to choose each. Illustrated examples walk you through optimizing complex UIs with multiple Canvases, using the Canvas Scaler for  layouts that work across devices, and creating in-world UI elements that sit seamlessly in your 3D scenes.

I poured a lot of knowledge and practical use cases into this guide and am convinced you will find value in it if you are interested in learning about the Canvas and the Canvas Scaler. It is a guide full of explanations, images, experiences and comes with a Unity package with example scenes for each Canvas Render Mode to give everything a try.

Things you will learn:

• What a Canvas is and how its core components (Rect Transform, Canvas, Canvas Scaler, Graphics Raycaster) work together

• The differences between ScreenSpace-Overlay, ScreenSpace-Camera, and World Space Canvas modes—and the use cases for each

• How to optimize UI performance by splitting complex interfaces into multiple Canvases and managing sorting orders

• How to use the Canvas Scaler’s three modes (Constant Pixel Size, Scale With Screen Size, Constant Physical Size) to achieve resolution-independent layouts

• Techniques for setting up default presets so every Canvas you create starts with your preferred settings

• Billboarding and scaling strategies to integrate Canvas elements into your 3D world seamlessly

Contains:

• 25-page PDF Guide with detailed chapters and visual walkthroughs

• Link to Source Code on GitHub (MIT License)

• Unity Package including example scenes and scripts, ready to import and explore (created in Unity 6, version 6000.0.f1f1)