To enable the Editor extension please visit: How can I add an Extension?
After the extension is enabled on your subscription, you can configure it on each individual upload field:
A new Section for the Editor extension will be available. You can enable it on your upload field:
You can configure the editor tools you want your customers to use on the uploaded images:
Each tool will show as it's own section in the image editor:
You can view a live example of the image editor: Image editor extension
The image editor support cropping custom shapes. It will generate a png file where the cut out parts are transparent.
To enable it check the "Shapes" setting:
You can add more shapes, select from the examples or add any SVG path to crop a specific shape:
You can view a live example of the shape cropping: Image editor shapes