Webp

            @if (Model.HasValue("billede") && Model.GetPropertyValue<IPublishedContent>("billede") != null)
            {
                <picture>
                    <source srcset="@Url.GetCropUrl(Model.GetPropertyValue<IPublishedContent>("billede"),
                     useCropDimensions:false,
                    furtherOptions: "&format=webp&quality=80&width=660&height=659&mode=crop")" type="image/webp">
                    <source srcset="@Url.GetCropUrl(Model.GetPropertyValue<IPublishedContent>("billede"),
                    useCropDimensions:false,
                    furtherOptions: "&format=jpeg&quality=80&width=660&height=659&mode=crop")" type="image/jpeg">
                    <img src="@Url.GetCropUrl(Model.GetPropertyValue<IPublishedContent>("billede"),
                     useCropDimensions:false)" loading=lazy />
                </picture>
            }