A DIB (Device Independent Bitmap) file is a raster image file that is similar in structure to the standard Bitmap files (BMP) but has a different header. It can be opened with almost all applications that can open a standard BMP file on Windows as well as macOS. DIB are binary files and have a complex file format similar to BMP
TGA, often referred to as TARGA, is a raster graphics file format created by Truevision Inc. (now part of Avid Technology). It was the native format of TARGA and VISTA boards, which were the first graphic cards for IBM-compatible PCs to support Highcolor/truecolor display. This family of graphic cards was intended for professional computer image synthesis and video editing with PCs; for this reason, usual resolutions of TGA image files match those of the NTSC and PAL video formats.