Rel-License is a simple, open, format for indicating content licenses which is embedable in (X)HTML, Atom, RSS, and arbitrary XML. Rel-License is one of several microformat open standards.
This specification is (C) 2004-2022 by the authors. However, the authors intend to submit (or already have submitted, see details in the spec) this specification to a standards body with a liberal copyright/licensing policy such as the GMPG, IETF, and/or W3C. Anyone wishing to contribute should read their copyright principles, policies and licenses (e.g. the GMPG Principles) and agree to them, including licensing of all contributions under all required licenses (e.g. CC-by 1.0 and later), before contributing.
Rel-License is one of several MicroFormats. By adding
rel="license" to a hyperlink, a page indicates that the destination of that hyperlink is license for the current page. E.g. with the following hyperlink:
<a href="http://creativecommons.org/licenses/by/2.0/" rel="license">cc by 2.0</a>
the author indicates that the page is licensed under a Creative Commons 2.0 Attribution Required license.
Multiple such rel="license" hyperlinks indicate that the page is available under any of the referred licenses. E.g. the following hyperlinks could be used to declare that a page is available under either a Creative Commons 2.0 Attribution Required license or the Apache 2.0 license:
<a href="http://creativecommons.org/licenses/by/2.0/" rel="license">cc by 2.0</a> <a href="http://www.apache.org/licenses/LICENSE-2.0" rel="license">Apache 2.0</a>
<dl class="profile"> <dt id="rel">rel</dt> <dd><p> <a rel="help" href="http://www.w3.org/TR/html401/struct/links.html#adef-rel"> HTML4 definition of the 'rel' attribute.</a> Here is an additional value.</p> <dl> <dt id="license">license</dt> <dd>Indicates that the referred resource is a license for the referring page.</dd> </dl> </dd> </dl>
- Dreamweaver Extension suite from the Web Standards Project enables the authoring of rel-license links from within Dreamweaver 8. Includes (cc) defaults.
- pnh_mf is a plugin for Textpattern that supports embedding rel license and other microformats in templates and blog posts. Written by Chris Casciano.
- Creative Commons (cc) license chooser
- Yahoo! (cc) search
- Google "Usage Rights" search
List of Licenses
- 20040211 rel="license" first proposed in presentation real world semantics at 2004 O'Reilly Emerging Technologies Conference, San Diego, CA, USA.
- 20040225 Thorough discussion of rel="license" including advantages and presentation possibilities.
- Creative Commons 2.0 By (Attribution Required) license
- Apache 2.0 license
- Contributed from http://developers.technorati.com/wiki/RelLicense
- Know your rel-license at Microformatique