Right-to-left Support
RadImageEditor fully supports right-to-left (RTL) language locales. It is created and added to the page root (as a direct child of the form element) and in order to turn on the RTL support you should set dir=rtl to the html or body element.
html
{
direction: rtl;
}
<telerik:RadImageEditor RenderMode="Lightweight" runat="server" ID="RadImageEditor1" Skin="Telerik" ImageUrl="~/Image1.jpg"
Height="365px" Width="585px">
</telerik:RadImageEditor>