预定义 MIME content types

Type

Subtype

Description

text

 

The document represents printable text.

 

calendar

Calendaring and scheduling information in the iCalendar format; see RFC 2445.

 

css

A Cascading Style Sheet used for HTML and XML.

 

directory

Address book information such as name, phone number, and email address; used by Netscape vCards; defined in RFCs 2425 and 2426.

 

enriched

A very simple HTML-like language for adding basic font and paragraph-level formatting such as bold and italic to email; used by Eudora; defined in RFC 1896.

 

html

Hypertext Markup Language as used by web browsers.

 

plain

This is supposed to imply raw ASCII text. However, some web servers use text/plain as the default MIME type for any file they can't recognize. Therefore, anything and everything, most notably .class byte code files, can get identified as a text/plain file.

 

richtext

An HTML-like markup for encoding formatting into pure ASCII text. It's never really caught on, in large part because of the popularity of HTML.

 

rtf

An incompletely defined Microsoft format for word processing files.

 

sgml

The Standard Generalized Markup Language; ISO standard 8879:1986.

 

tab-separated-values

The interchange format used by many spreadsheets and databases; records are separated by linebreaks and fields by tabs.

 

xml

The W3C standard Extensible Markup Language. For various technical reasons, application/xml should be used instead, but often isn't.

multipart

 

Multipart MIME messages encode several different files into one message.

 

mixed

Several message parts intended for sequential viewing.

 

alternative

The same message in multiple formats so a client may choose the most convenient one.

 

digest

A popular format for merging many email messages into a single digest; used by many mailing lists and some FAQ lists.

 

parallel

Several parts intended for simultaneous viewing.

 

byteranges

Several separately contiguous byte ranges; used in HTTP 1.1.

 

encrypted

One part for the body of the message and one part for the information necessary to decode the message.

 

signed

One part for the body of the message and one part for the digital signature.

 

related

Compound documents formed by aggregating several smaller parts.

 

form-data

Form responses.

message

 

An email message.

 

external-body

Just the headers of the email message; the message's body is not included but exists at some other location and is referenced, perhaps by a URL.

 

http

An HTTP 1.1 request from a web client to a web server.

 

news

A news article.

 

partial

Part of a longer email message that has been split into multiple parts to allow transmission through email gateways.

 

rfc822

A standard email message including headers.

image

 

Two-dimensional pictures.

 

cgm

A Computer Graphics Metafile format image. CGM is ISO standard 8632:1992 for device-independent vector graphics and bitmap images.

 

g3fax

The standard for bitmapped fax images.

 

gif

A Graphics Interchange Format image.

 

jpeg

The Joint Photographic Experts Group file format for bitmapped images with lossy compression.

 

png

A Portable Network Graphics Format image. The format was developed at the W3C as a modern replacement for GIF that supports 24-bit color and is not encumbered by patents.

 

tiff

The Tagged Image File format from Adobe.

audio

 

Sound.

 

basic

8-bit ISDN -law encoded audio with a single channel and a sample rate of eight kilohertz. This is the format used by .au and .snd files and supported by the java.applet.AudioClip class.

video

 

Video.

 

mpeg

The Motion Picture Experts Group format for video data with lossy compression.

 

quicktime

Apple's proprietary QuickTime movie format. Before being included in a MIME message, QuickTime files must be "flattened".

model

 

3-D images.

 

vrml

A Virtual Reality Modeling Language file, a format for 3-D data on the Web.

 

iges

The Initial Graphics Exchange Specification for interchanging documents between different CAD programs.

 

mesh

The mesh structures used in finite element and finite difference methods.

application

 

Binary data specific to some application.

 

octet-stream

Unspecified binary data, which is usually saved into a file for the user. This MIME type is sometimes used to serve .class byte code files.

 

java

A nonstandard subtype sometimes used to serve .class byte code files.

 

postscript

Adobe PostScript.

 

dca-rft

IBM's Document Content Architecture-Richly Formatted Text.

 

mac-BinHex40

A means of encoding the two forks of a Macintosh document in a single ASCII file.

 

pdf

An Adobe Acrobat file.

 

zip

A zip compressed file.

 

macwriteii

A MacWrite II word-processing document.

 

msword

A Microsoft Word document.

 

xml+xhtml

An XHTML document

 

xml

An Extensible Markup Language document.

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