Tags, usually, are seen as keywords or terms that help to identify information. This can range from social media posts to files such as images or documents. These tags are used to describe and group together items of a similar or same topic. Furthermore, especially in file systems, it makes finding certain documents, images, videos or other media easier.
The meta information Tagged that can be found mostly in image files, gives information about whether the picture in question contains such tags or not. It does not hold the tags themselves, but a “yes” or “no” to indicate the presence of tags.
Since tags are usually chosen by the creator or person who modified the file, tags can vary greatly.
The Tagged exif information is different from what is known as tagged PDF.