Hi Praetorion,
Thank you for your nice words. We hope that you will enjoy working with the new Image Editor.
Could you please explain in more details wheat do you mean by image annotation feature? Have you seen this feature offered by another Image editor control?
Yes, it is possible to add custom toolbars and custom buttons to the toolbar. Here is an example which demonstrates how to implement a custom Save button:
All the best,
Rumen
the Telerik team
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