diff --git a/app/controllers/alchemy/admin/essence_pictures_controller.rb b/app/controllers/alchemy/admin/essence_pictures_controller.rb
index c8ee59b064..9a4c822d05 100644
--- a/app/controllers/alchemy/admin/essence_pictures_controller.rb
+++ b/app/controllers/alchemy/admin/essence_pictures_controller.rb
@@ -16,6 +16,7 @@ def crop
 				if @essence_picture.picture
 					@content = @essence_picture.content
 					@options = params[:options] || {}
+					@options[:format] ||= (configuration(:image_store_format) or 'png')
 					if @essence_picture.render_size.blank?
 						if @options[:image_size].blank?
 							@size_x, @size_y = 0, 0
diff --git a/app/views/alchemy/admin/essence_pictures/crop.html.erb b/app/views/alchemy/admin/essence_pictures/crop.html.erb
index 3395d0bc3a..099df5dfff 100644
--- a/app/views/alchemy/admin/essence_pictures/crop.html.erb
+++ b/app/views/alchemy/admin/essence_pictures/crop.html.erb
@@ -31,7 +31,7 @@
 
 <div id="jscropper">
 	<%= image_tag(
-		alchemy.zoom_picture_path(:id => @essence_picture.picture.id, :name => @essence_picture.picture.urlname),
+		alchemy.zoom_picture_path(:id => @essence_picture.picture.id, :name => @essence_picture.picture.urlname, :format => @options[:format] ),
 		:id => 'imageToCrop',
 		:onload => "Alchemy.ImageCropper.init(
 			[#{@initial_box[:x1]}, #{@initial_box[:y1]}, #{@initial_box[:x2]}, #{@initial_box[:y2]}],