• The "Crop Tool" is used to crop or clip an image.
• Cropping tool is often used to remove borders, or to eliminate unwanted areas from an image.
• You can set the width, height and resolution for the image to be cropped in the "Options Bar" at the top.
• Here find an example on how to use cropping tool in adobe photoshop.
• Drag the mouse over the image and press enter key to crop the selection, double click to save the cropped area.
• Usually for web based application cropping, resolution of 72 pixels is recommended.
• The Shift+C shortcut will change the active tool to the Crop Tool.
• You can combine cropping and resizing in the same operation, using the options in the options bar.

Video Tutorial: