Images which are uploaded to your website through a field (ie, images which are not included in a text area) may be cropped after they are uploaded. If an image is unusable in its current form, you will be prompted via a red popup window to crop the image.
After uploading an image, click on the Crop' button.
Select the area you want to crop. Use the handles around the crop area to re-size the cropping selection area. Click and drag the cropping selection area to move the selection area.
Alternatively, you may want to click 'Maximize selection' at the bottom of the screen for quick and effortless cropping.
Click the 'Save' button at the bottom right of the screen. This will close the cropping overlay.
The Crop button on the node (content) edit form will indicate that the image has been cropped.
Click the "Save" button at the bottom of the node (content) edit form when you are done.