What is Exiftool?
Exiftool is an open source tool that read, write and edit any meta related to Jpeg, Pdf, Audio, and Video. The purpose of Exiftool is that differentiation between original file with the modification file
The tools can editing and read any format that listed here
Installation and Usage
Exiftool in Windows normally stand-alone tools while ExifTool in Mac come with a package to be installed.

For example, Exiftool can be usage as follows:

For Mac User, you can install the Exiftool here
For Windows User, you can install the Exiftool here