Hello! I'm giving a very short tutorial on how to make an 아이콘 square (since I often saw many un-square icons). 당신 don't need Photoshop 또는 GIMP 또는 heavy picture editors. Here I'm using link
1. Click "Editor". Here you'll see a Photoshop-like layout.
2. Click "Open image from computer". Select your 아이콘 또는 any picture 당신 want to make square.
3. Click on the "Crop" 아이콘 on the 상단, 맨 위로 left of the panel. Choose "output size" on the "Constraint" dropdown. Enter 200 x 200 또는 whatever square size 당신 want.
4. Drag the 쥐, 마우스 over your picture. Hit Enter.
5. Don't forget to save your square picture!