Changing canvas size

Changing the canvas size involves adding or taking away pixels from around the edge of your image, much like adding a border to a picture or cropping the image to a smaller size, respectively. Unaffected pixels are not stretched or squashed.

Unwanted canvas area can be removed (trimmed) from the document edge, and conversely, you can expand your canvas to fit layer content which extends over your document edge.

To change canvas size:

From the Document menu, select Resize.
Change the Resize option from Document to Canvas.
Select an Anchor point which will resize the canvas 'under' the document from that anchor point.
Using the vertical sliders on the left, either drag up/down or enter your new canvas dimensions in the pop-up window, which you can access by tapping on the numerical value of the unit selected.
To resize the width and height independently, tap the lock icon (to unlock) between the Size boxes.
(Optional) Select a different measurement unit from the Units menu. Rulers will update to the new measurement unit.
Tap the check to apply the resize.

To remove unwanted canvas areas:

From the Document menu, select Canvas>Clip Canvas.

To expand the canvas to fit layer content:

From the Document menu, select Canvas>Unclip Canvas.

To swap to a transparent canvas:

From the Document menu, select Canvas and then Transparent Canvas.

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