I know this question might seem a bit too silly but I've been trying to do this for an hour. Image I'm trying to crop/cut

As you can see in the image, I attempted to cut the area shown in red lines (which are diagonal) and fill it with white so only the bottom part with the green lines are seen. I:

1: Tried the crop tool and making a preset (but the area was rectangular and there was no option for diagonal or straight areas.

2: Tried shaping the eraser to a diagonal line which resulted in imperfect cuts.

3:Tried to paint the whole place but failed.

So is there a way for me to perfectly crop the image so that the only visible part is the bottom?

  • 1
    Images can only be square, you need to mask or clip instead. Use pen tool.
    – joojaa
    Commented Dec 10, 2016 at 22:31

1 Answer 1


I would draw shapes and use them as a mask for the Layer:

First, draw the shapes: First, draw the shapes

Combine them and Rasterize them, then select them(CTRL+CLick on the Layer): enter image description here

Create the Layer Mask:

enter image description here

Invert the Layer Mask(If the Panel isn't the double-click the Layer Mask.)

enter image description here

And you're done :) (If you want you can right-click the Mask and click "Apply Layer Mask" to bake the Mask in)

enter image description here

  • Or you could just right click on the select tool thing (rectangle made of dotted line) and choose polygonal select.
    – jack
    Commented Oct 13, 2019 at 6:14
  • you don't explain how to cut which icon to click i got lost with the eraser because you didn't show how to do that Commented Jun 4, 2021 at 21:32

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