Change the Canvas Size in Photoshop Elements 12: Video
This video shows you how to change the canvas size in Photoshop Elements 12.
Changing the Canvas Size in Photoshop Elements 12: Overview
You can use the “Canvas Size” command in the Menu Bar of Photoshop Elements 12 to add or remove workspace around the actual image file. You can also use this command to crop an image by decreasing the canvas size.
To use this command, select “Image| Resize| Canvas Size…” from the Menu Bar. In the “Width:” text box, type the number that you want for the width and then use the drop-down to the right of the text box to select the unit of measurement that you want. In the “Height:” text box, type the number that you want for the height and then use the drop-down to the right of the text box to select the unit of measurement that you want. If you check the “Relative” checkbox, which resets any measurements that you have made, you can re-enter the numbers and units and it will adjust the canvas size in relation to the size that it currently is.
In the “Anchor” section, click the arrow to set the direction by which you want to anchor the image. The growth (or shrinkage) of the canvas will occur in the direction that the black arrows point. Below that area, use the “Canvas extension color:” drop-down to select which color you want for the canvas extension if you are extending the size of your image. You can also just click the small color box to the right of that drop-down to select a custom color using the “Color Picker,” if you prefer. To then apply the change that you set, click “OK.”