Make it easier to resize an image while maintaining its aspect ratio

To resize an image in a rich text field in edit mode, you must specify the width and height numerically in the properties, which makes it difficult to achieve the desired size in a single operation, and the operation must be repeated until the desired size is achieved. Also, even if the same numbers are entered for width and height, they may not be adjusted to be the same. (For example, setting both width and height to 30% might result in 29% and 30%, respectively.)

If the image could be dynamically resized by dragging the corner of the image with the mouse, as MS Office does, it would be resized as expected in a single operation while maintaining the aspect ratio.