@Vaeinoe, images from that website can be found in a much larger resolution, which will make cutting them easier and also provide a much better cut.

The URL for the source you've posted is: https://img-res.pitchero.com/?url=images.pitchero.com%2Fui%2F474413%2Fimage_5d5ab174bcf87.jpg&h=240&w=240&t=square&o=jpg

If you delete the bit in red and bold, you'll get https://img-res.pitchero.com/?url=images.pitchero.com%2Fui%2F474413%2Fimage_5d5ab174bcf87.jpg, which gives you the below, which I'm sure you'll agree is much better