HD wallpaper: board, physics, school, optics, lenses, light, mathematics online crop

  • Double click dark area to toggle "Crop" and "Drag" mode
  • Keep aspect ratio: hold Shift key when resizing the crop box
  • Crop a square image: hold Shift key when cropping on the image
  • Scroll mousewheel to zoom in & zoom out wallpaper
  • Press Esc key to reset current crop box
board, physics, school, optics, lenses, light, mathematics
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