Smart Shapes: How AI Shape Recognition Makes Drawing Faster

What Are Smart Shapes?

Smart Shapes is an AI-powered feature that recognizes your freehand drawings and converts them into clean geometric shapes. Draw a rough circle and it becomes a perfect circle. Sketch a wobbly rectangle and it snaps into a clean rectangle.

This bridges the gap between the speed of freehand drawing and the polish of precise shapes. You get the natural, intuitive feel of sketching with the clean output of a diagram tool.

How to Enable Smart Shapes

Toggle Smart Shapes on or off using the button in the note header bar while editing a canvas. When enabled, your hand-drawn shapes are automatically recognized and cleaned up as you draw. When disabled, your strokes stay exactly as you drew them.

You can switch Smart Shapes on and off at any time, even within the same canvas. This lets you use clean shapes for diagrams and freehand strokes for sketches, all on the same surface.

What Shapes Are Recognized

Smart Shapes recognizes common geometric shapes:

• Rectangles and squares — Draw any four-sided closed shape
• Circles and ovals — Draw a closed curved shape
• Lines — Draw a straight stroke
• Arrows — Draw a line with an angled tip
• Triangles — Draw a three-sided closed shape
• Diamonds — Draw a rotated four-sided shape

The recognition is forgiving — your shapes don't need to be precise. That is the whole point. Draw quickly and roughly, and Smart Shapes cleans up the result.

Best Use Cases

Architecture Diagrams

When diagramming software systems, Smart Shapes lets you sketch boxes for services, circles for databases, and arrows for data flow at the speed of thought. The result looks clean enough to share with colleagues.

Flowcharts

Draw process flowcharts by sketching rectangles for steps, diamonds for decision points, and arrows for flow direction. Smart Shapes produces clean, readable flowcharts from rough sketches.

Wireframes

Sketch app wireframes with rectangles for screens, smaller rectangles for buttons, and circles for icons. The cleaned-up shapes look polished enough for early-stage design discussions.

Organizational Charts

Draw boxes for people or teams with lines connecting them. Smart Shapes produces a clean org chart from a quick sketch.

Mind Maps

Sketch circles or ovals for concepts and lines connecting them. Smart Shapes cleans up the nodes while preserving the organic layout of your mind map.

Tips for Better Recognition

• Draw closed shapes. Make sure the start and end of your shape stroke connect. Open shapes may not be recognized.
• Draw with intention. Quick, confident strokes work better than slow, hesitant ones. Trust the recognition.
• Use reasonable proportions. Extremely elongated or tiny shapes may not be recognized correctly.
• Toggle as needed. If you want a freehand sketch area next to a clean diagram, disable Smart Shapes for the sketch portion.

When to Turn Smart Shapes Off

Smart Shapes is great for diagrams but not for everything. Turn it off when:

• Sketching freely. Creative sketches, doodles, and artistic drawings should stay freehand.
• Handwriting. Smart Shapes may try to interpret handwritten text as shapes.
• Organic drawings. Anything that should look natural rather than geometric.

The toggle is always one click away, so switch freely between modes as your work requires.

Smart Shapes makes OmniCanvas versatile — it is both a freehand sketchpad and a clean diagramming tool, depending on what you need in the moment. For more ways to combine these shapes into polished diagrams, see advanced canvas drawing techniques; if you are just getting started, the beginner's tutorial is the place to begin.