Change canvas size
You can change the size, the position, and the color of the canvas by clicking on the Canvas element on the left side of the interface. The Canvas is the first in the list of Elements and you will find it here:
You will see the following settings on the right side of the app:
Simply modify the width and the height of the canvas.
You can also change the canvas color, however, this will not be included in your Exported file, unless you select this in the Export panel.
You can read more about the Export settings here.
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