Hi Dipak,
You could customize the Crop dialog and add a logic that implements the desired functionality to modify the padding of the image and return the modified image into the ImageEditor instead of the original one. I suggest following
this live example, in which is explained how to customize a built-in dialog.
If you have any difficulties with this approach, I recommend contacting us within a formal support thread.
Regards,
Ianko
Telerik
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