TGA is a long-used raster graphic format. It was developed by Truevision Inc. (now Pinnacle Systems) back in 1984. It was initially used by the developer only for its own graphic adapters, but gradually gained popularity (primarily in the field of video processing and animation). Widely used in computer games, where it is used to store textures (including 3D video games). The name of the format comes from Targa Graphic. TGA files may partially contain image transparency information. They can become the main one for creating GIFs.
ODG is not the most common vector image file format. Its developer is the OASIS group, and the name is an abbreviation for OpenDocument Graphic File. ODG vector images are set using dots, lines, and curves, and saved using XML markup. As a rule, ODG files are considered optimal for creating, editing and storing drawings, vector images and logos. To create such files at the moment most often use the popular free office suite Apache OpenOffice and LibreOffice.