Photoshop Canvas size may be too big or too small when we have finished creating a graphic design. If it’s too big, we can shrink the canvas size in various ways.
Some ways How to Minimize Photoshop Canvas Size?
The usual way to change canvas size is to click the Image> Canvas Size menu and reset the canvas size by entering the numbers in the Width and Height fields manually. But, this way has a fairly high error rate, especially if we do not really understand how many canvas sizes we want.
The easier way is to use Crop Tool.
The trick, click Crop Tool and create a rectangle just as you created the selection field using the Rectangular Marquee Tool.
Now, the section that is outside the rectangular field of the Crop Tool will be removed. You can easily set the Crop Tool field size by dragging one of the handles (black boxes) around the rectangular plane.
If you’ve found the right size, double-click your mouse and automatically, the canvas size will be truncated following the size of the rectangular field.