.QRC file extension stores the Qt Resource Collection File. The Qt QRC file is extensively used by the cross platform application development toolkit Qt. The Qt resource system works on a platform independent approach and uses .QRC format; an XML based file system.
The .QRC file format is a repository of resource files. It keeps a database of all the files that are the branches of application's source tree. It contains the path of all the resources. The paths may be either accurate or may contain the sub – directory reference.