MIME Types


Applies To: Windows Server 2012 R2, Windows Server 2012

Use the MIME Types feature page to manage a list of Multipurpose Internet Mail Extensions (MIME) types so you can identify the types of content that can be served from a Web server to a browser or a mail client.

Sort the list by clicking one of the feature page column headings or select a value from the Group by drop-down list to group similar items.

Related scenarios

In this document

UI Elements for MIME Types

The following tables describe the UI elements that are available on the feature page and in the Actions pane.

Feature Page Elements

Element Name



Displays the file name extension, for example, .chm.


Displays the MIME type, for example, application/octet-stream.

Entry Type

Displays whether the item is local or inherited. Local items are read from the current configuration file, and inherited items are read from a parent configuration file.

Actions Pane Elements

Element Name



Opens the Add MIME Type dialog box from which you can add a MIME type.


Opens the Edit MIME Type dialog box from which you can edit the selected MIME type.


Removes the item that is selected from the list on the feature page.

Add or Edit MIME Type Dialog Box

Use the Add MIME Type and Edit MIME Type dialog boxes to create and edit Multipurpose Internet Mail Extensions (MIME) types. MIME types help clients handle new file name extensions appropriately. If IIS does not recognize the file name extension requested by the client, IIS sends the content as the default MIME type, which is Application. This MIME type signifies that the file contains application data, and it usually means that clients cannot process the file.

Element Name



Type a file name extension. This is a static file name extension, for example, .chm.


Type a MIME type, for example, application/octet-stream.