S3 Drive automatically sets the MIME Content-Type on files during upload based on the file extension. For instance a file ending in .txt will use a Content-Type of text/plain.
If desired, the Content-Type mapping may be modified for an existing extension, or a new mapping for a new extension may be added. Note that extensions must include the '.', for example .txt. If a mapping is not found for the file extension the Content-Type will not be set explicitly. The mapping between file extensions and Content-Types is defined by name value pairs in the registry at the following path:
The following values are applicable at this path:
The standard MIME Content-Type, for example text/plain.