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How to use Advanced Image Rendering Widget?
D5 Widget is a customized extension module of D5 Render, aiming to provide advanced features while keeping the simplicity.
Go to Menu > Preference > Widget, and you can check what you installed, switch on/off with one click to manage your widgets.

Advanced Image Rendering Widget
After switching this widget, you can select .png .jpg .tga .tif .exr in the "Format" option, when rendering images.

Formats