There is no way to use summernote native callbacks.

[mostopalove]

Please, provide possibility to add callbacks into summernote widget as here In the current implementation, the summernote.image.upload.error event is fired at the same time as summernote.image.upload.

[mostopalove]

The same thing with summernote.change event. It also is fired right after summernote.image.upload which is not logical, since the field changes only after the image is loaded.