When you want to flip objects on your Fabric.js canvas, you use the flipX and flipY properties. These properties control whether an object is mirrored along the horizontal or vertical axis. Setting flipX to true will flip the object horizontally, creating a mirror image across the vertical axis. This means the left and right sides of the object are swapped. Setting flipY to true will flip the object vertically, mirroring it across the horizontal axis so that the top and bottom are reversed.

These transformations do not change the object's position or size—they only affect the way it is drawn. You can flip any Fabric.js object, such as rectangles, triangles, images, or text. Flipping is especially useful for creating reflections, symmetrical designs, or changing the orientation of objects without manually redrawing them. To flip an object, simply set the flipX or flipY property to true or false. You can also toggle these properties in response to user actions, such as clicking a button.