1. Peakpx
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2. snow
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3. online crop

"snow" image original width is 9936px, original height is 2512px, you can crop it to any sizes with width less than 9936px and height less than 2512px. drag area with blue border below to select which to crop, double click dark area to toggle "drag" and "crop" mode, use your middle mouse button to zoom in or zoom out, then click blue button to download cropped image.