How does the image cropper work?
Pick the crop you need from the grid, then drop your image on the page that opens. Drag the frame over the part you want to keep, adjust the edges, and a live preview shows the result as you go. When it looks right, download it. The whole thing runs in the browser on your own machine, so the crop is ready in a moment with nothing sent anywhere. You always choose the shape first, so you land on a page built for exactly that crop. After cropping, you can also compress, resize, or convert the image.