The slice tool is used to cut an image into smaller pieces so it will fit into smaller places and when you click on it it comes up with different options such as crop tool,slice tool and slice select tool.
- Select the slice tool in the toolbox.
- Click and drag over the area you wish to make into a slice.
- Release the mouse button - Photoshop automatically creates the necessary number of slices, with the active slice highlighted.
- Using the slice select tool, you can move and resize slices by dragging inside a slice, or by dragging the handles.