Status of this Document

This document is subject to change at any time with the approval of the EPUB Working Group.

The media types defined in this document will not be removed, but may be deprecated.

Requests for additions, modifications and clarifications can be made through the Issue Tracker. Pull requests are also welcome. Note that requests for new Core Media Types need to show that the requested media type has broad support across platforms.

Refer to the IDPF Issue Reporting Guidelines for more information about the change request process.

2. Supported Media Types

The following table lists the EPUB 3 Core Media Types.

The columns in the table represent the following information:

Media Type – The MIME media type [RFC2046] used to represent the given Publication Resource in the manifest [Packages3].
Content Type Definition – The specification to which the given Core Media Type Resource has to conform.
Applies to – The Publication Resource type(s) that the Media Type and Content Type Definition applies to.

Media Type	Content Type Definition	Applies to
Image Types
`image/gif`	[GIF]	GIF Images
`image/jpeg`	[JPEG]	JPEG Images
`image/png`	[PNG]	PNG Images
`image/svg+xml`	SVG Content Documents [ContentDocs3]	SVG documents
Application Types
`application/xhtml+xml`	XHTML Content Documents [ContentDocs3]	XHTML Content Documents that use the XHTML syntax [HTML].
`application/javascript`	[RFC4329]	Scripts. Deprecates `text/javascript`
`application/x-dtbncx+xml`	[OPF2]	The superseded NCX.
`application/font-sfnt`	[OpenType] [TrueType]	OpenType and TrueType fonts. Deprecate `application/vnd.ms-opentype`.
`application/font-woff`	[WOFF]	WOFF fonts
`application/smil+xml`	[MediaOverlays3]	EPUB Media Overlay documents
`application/pls+xml`	[PLS]	Text-to-Speech (TTS) Pronunciation lexicons
Audio Types
`audio/mpeg`	[MP3]	MP3 audio
`audio/mp4`	[AAC LC], [MP4]	AAC LC audio using MP4 container
Video Types
EPUB 3 does not currently define any video codecs as Core Media Types. Refer to the note in EPUB Publications — Reading System Conformance for informative recommendations on support for video codecs in EPUB Publications.
Text Types
`text/css`	CSS Style Sheets [ContentDocs3]	CSS Style Sheets.
Font Types
`font/woff2`	[WOFF2]	WOFF2 fonts

EPUB 3 Core Media Types

Status of this Document

1. Overview

2. Supported Media Types

References

Normative References

Informative References