Metadata. How to remove them from documents?

"Metadata is essentially ""data about data"", that is, accompanying information that is present in many files. The name of the author of a text document, the date and place of creation of a photo, and much more. In most cases, this is useful information that can allow you, for example, to logically group tracks or create albums of photos from trips.

But what if you need to share this file, but you do not want to share the accompanying information? Where is the metadata? How to view metadata? Methods for removing metadata"