ImgConvert is an add-on utility allowing to conversation raster images to internal Autodesk® AutoCAD® blocks. So you can embed attached (external) raster images into your DWG drawings - the resulting DWG file will no more depend on external references. Both monochrome and color images are supported, in any raster file format. There is a penalty in file size - larger images may grow your DWG files substantially. ImgConvert also contains tools to draw and embed QR Codes (2D matrix bar codes) in your DWGs.
For more information and ordering of the FULL version see https://www.cadstudio.cz/en/apps/imgconvert/