Hi Ollie,

Below is the code that will help you to get dynamically Image Cropper Alias. You need to use Data Type Service and reference for GetByEditorAlias("Umbraco.ImageCropper") method. This will give you list of Image Cropper with their configuration details.

Please review and let me know if you need any further help.

using Umbraco.Core.PropertyEditors;
using Umbraco.Core.Services;
using Umbraco.Web;
using Umbraco.Web.Models;

namespace Training.Web.Umbraco.Domain.Controllers
{
    public class HomeController : SurfaceRenderMvcController
    {
        private readonly IDataTypeService _dataTypeService;

        public HomeController(IUmbracoContextFactory context, IDataTypeService dataTypeService)
        {
            _dataTypeService = dataTypeService;
        }

        public ActionResult Home(ContentModel model)
        {
            var dataType = _dataTypeService.GetByEditorAlias("Umbraco.ImageCropper");
            List<PreValue> toReturn = new List<PreValue>();
            if (dataType != null)
            {
                var valueList = (ImageCropperConfiguration)dataType.First().Configuration;

                if (valueList != null && valueList.Crops != null && valueList.Crops.Any())
                {
                    toReturn.AddRange(valueList.Crops.Select(s => new PreValue
                    {
                        Width = s.Width,
                        Value = s.Alias,
                        Height = s.Height
                    }));
                }
            }

            // Ignore this code
            var newModel = ModelLogic.CreateMasterModel(model.Content) as MasterModel<Home>;
            return CurrentTemplate(newModel);
        }
    }

    public class PreValue
    {
        public int Width { get; set; }
        public int Height { get; set; }
        public string Value { get; set; }
    }
}

Regards,

Shaishav