On this page
You can configure a file's metadata attributes to describe aspects of the file, such as its content type, language, or encoding. You can also use metadata attributes to configure the CDN's caching behavior and specify how clients should handle files when they access them.
If you do not specify a
Content-Type metadata attribute for a hosted
file, MongoDB Realm will attempt to automatically add a
attribute to it based on the file extension.
For example, Realm would automatically add the attribute
Content-Type: application/html to the file