Rich Text Format Directory

Infobox file format
name = Rich Text Format Directory
icon =
extension = .rtfd
mime =
type code =
uniform type = com.apple.rtfd
owner =
genre = Word processing document
container for = RTF and media files
contained by =
extended from =
extended to =
standard =

Rich Text Format Directory, also known as RTFD (due to its extension), is the primary document format of TextEdit, an application native to NeXTSTEP and Mac OS X which has also been ported to other versions of Unix. The file format is based on the Rich Text Format, but can also include "attachments" such as images. An RTFD file is a bundle, a folder containing files. It contains a Rich Text file called "TXT.rtf" that contains Rich Text formatting commands, as well as commands for including images or other attachments contained within the bundle. Images used in the document are stored in the bundle in their native formats.

In contrast to RTF, RTFD files cannot be opened by applications on Windows or other non Mac OS X operating systems, as this kind of bundle files currently only are supported on Mac OS X.

One big advantage with RTFD is that it supports scalable high quality image formats like PDF, so an RTFD file can print with no information loss at large paper sizes. RTF does support a number of scalable image meta file formats, but they are not as versatile as PDF. [http://pagesfaq.blogspot.com/2006/12/why-cannot-pages-show-pictures-in-rtf.html]