ExifTool is free and open source software for editing metadata in images, videos and audio files.
It supports a wide variety of file formats and allows users to edit information such as date, time, GPS, author, copyright and much more.
It is widely used by photographers, video editors, media organizations and others who need to manage and edit metadata in their files.
The software is maintained by Phil Harvey, a Canadian programmer and photographer, and is constantly updated with new features and improvements.