Network Working GroupL. Romary
Internet-DraftTEI Consortium and INRIA
Intended status: Standards TrackS. Lundberg
Expires: October 10, 2010The Royal Library, Copenhagen
 April 08, 2010

The 'application/tei+xml' mediatype


This document defines the 'application/tei+xml' media type for markup languages defined in accordance with the Text Encoding and Interchange guidelines

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Table of Contents

1.  Introduction
2.  Registration of MIME type 'application/tei+xml'
3.  Recognizing TEI files
4.  Fragment identifier
5.  Security considerations
6.  IANA Considerations
7.  Normative References
§  Authors' Addresses


1.  Introduction

The TEI is an international and interdisciplinary standard that is widely used by libraries, museums, publishers, and individual scholars to represent all kinds of textual material for online research and teaching. [TEI] (, “TEI Guidelines,” .)

In order to increase the possibilities for generic XML processing this document defines the 'application/tei+xml' media type in accordance with [RFC3023] (Murata, M., St. Laurent, S., and D. Kohn, “XML Media Types,” January 2001.).


2.  Registration of MIME type 'application/tei+xml'

MIME media type name: application

MIME subtype name: tei+xml

Required parameters: None

Optional parameters: charset

Identical with charset in [RFC3023] (Murata, M., St. Laurent, S., and D. Kohn, “XML Media Types,” January 2001.)

Encoding considerations:

By virtue of TEI XML content being XML, it has the same considerations when sent as 'application/tei+xml' as does XML in general. See RFC 3023 [RFC3023] (Murata, M., St. Laurent, S., and D. Kohn, “XML Media Types,” January 2001.), Section 3.2.

Security considerations:

TEI elements may refer to arbitrary URIs. Hence the security issues of [RFC3986] (Berners-Lee, T., Fielding, R., and L. Masinter, “Uniform Resource Identifier (URI): Generic Syntax,” January 2005.), section 7, apply. See also Security considerations (Security considerations)

Interoperability considerations: None.

Published specification:

This media type registration is for TEI documents as described in the TEI Guidelines[TEI] (, “TEI Guidelines,” .).

Applications which use this media type:

There are currently no applications using the media type 'application/tei+xml'. It will be an entirely new type which is registered in order to allow for the deployment of TEI on the World Wide Web as a first class XML application.

Additional information:

Magic number(s):

There is no single initial octet sequence that is always present in TEI documents.

file extension(s):

TEI documents have most often the extension '.xml'. Other common extensions are '.tei', '.teiCorpus' and '.odd'.

Macintosh File Type Code(s)


Object Identifier(s) or OID(s)

Not applicable


3.  Recognizing TEI files

TEI files are XML documents or fragments having the root element in a TEI namespace, i.e., a namespace URI starting with This URI is followed by a version number, corresponding to the major release of the TEI schema. The current namespace is

In general, a [TEI] (, “TEI Guidelines,” .) file usually contains either of the strings



near the beginning.


Frequently, the actual XML content of TEI files will contain <TEI somewhere early on.

More specialized types of documents may start with a lower case tei as in <teiCorpus.


4.  Fragment identifier

Documents having the media type 'application/tei+xml', use the fragment identifier notation in the same way as does 'application/xml'. This is specified in [RFC3023] (Murata, M., St. Laurent, S., and D. Kohn, “XML Media Types,” January 2001.) or its successors.


5.  Security considerations

An XML resource identifier does not in itself compromise data security. When converted to IRIs or URIs and used to provide access to network resources, care must be taken to properly interpret the data to prevent unintended access.

Any application accepting submitted or retrieves TEI XML for processing has to be aware of risks connected with injection of harmful scripts and executable XML. Even common XML inclusion or the use of external entities, could potentially be used to reveal aspects of a service that may compromise its security. Any vulnerability of these kinds are, however, application specific. The TEI namespaces do not contain such elements.


6.  IANA Considerations

Registration of MIME type 'application/tei+xml' (Registration of MIME type 'application/tei+xml')


7. Normative References

[RFC3023] Murata, M., St. Laurent, S., and D. Kohn, “XML Media Types,” RFC 3023, January 2001 (TXT).
[RFC3986] Berners-Lee, T., Fielding, R., and L. Masinter, “Uniform Resource Identifier (URI): Generic Syntax,” STD 66, RFC 3986, January 2005 (TXT, HTML, XML).
[TEI] TEI Guidelines.”


Authors' Addresses

  Laurent Romary
  TEI Consortium and INRIA
  Sigfrid Lundberg
  The Royal Library, Copenhagen
  Postbox 2149
  1016 KĂžbenhavn K