BlendRef is an addon that integrates image and video reference boards directly into the Blender viewport. It functions similarly to standalone reference applications, allowing users to view and organize reference material without leaving the 3D workspace or managing overlapping application windows.

The tool supports importing individual images, image sequences, and video formats. For animation references, users can set custom A-to-B loop points, adjust playback speed, and synchronize reference timing. References can be organized by adding text labels, arranging items in columns, and applying standard transformations like rotation, scaling, and flipping. All reference data is stored within specific Blender collections, enabling users to append their reference boards across different project files.