Hello! I'm giving a very short tutorial on how to make an Иконка square (since I often saw many un-square icons). Ты don't need Photoshop или GIMP или 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 Иконка или any picture Ты want to make square.
3. Click on the "Crop" Иконка on the вверх left of the panel. Choose "output size" on the "Constraint" dropdown. Enter 200 x 200 или whatever square size Ты want.
4. Drag the мышь over your picture. Hit Enter.
5. Don't forget to save your square picture!