I create an image frame.
I then place an image in that frame that is larger the then the box to make it look cropped.
When I change the image frame to "stretch to browser width" the image resizes to its original size as soo as I click that option thus negating the cropped look.
Any reason why?
Are you talking about a filled rectangle or a placed image
Could you please show us a screenshot? Its not quite clear, what you want to achieve.
We do have a crop tool as well using which you can directly crop your image.
Please correct me if you intended something else.
Did Ankush's solution helped you. Is there a specific reason for your workflow involving Image frames?