BBC Micro Image Converter was originally developed as a tool for converting images from the BBC Micro screen dump format to BMP format. Following the release of BBC Micro Image Converter there was interest for a tool that could convert in the other direction, i.e. from modern image formats to the BBC Micro.
Image2BBC (originally entitled Img2BBC) was developed initially as a plug-in module for BBC Micro Image Converter, but soon became its own entity as its feature set grew.
As of version 0.20 the two programs are now being amalgamated together, although much work still needs to be done for them to be integrated properly.