Markdown[11] is a lightweight markup language for creating formatted text using a plain-text editor. John Gruber and Aaron Swartz[3][4] created Markdown in 2004 as a markup language that is intended to be easy to read in its source code form.[11] Markdown is widely used for blogging and instant messaging, and also used elsewhere in online forums, collaborative software, documentation pages, and readme files.
The initial description of Markdown[12] contained ambiguities and raised unanswered questions, causing implementations to both intentionally and accidentally diverge from the original version. This was addressed in 2014 when long-standing Markdown contributors released CommonMark, an unambiguous specification and test suite for Markdown.[13]
^Gruber, John (8 January 2014). "The Markdown File Extension". The Daring Fireball Company, LLC. Archived from the original on 12 July 2020. Retrieved 27 March 2022. Too late now, I suppose, but the only file extension I would endorse is ".markdown", for the same reason offered by Hilton Lipschitz: We no longer live in a 8.3 world, so we should be using the most descriptive file extensions. It's sad that all our operating systems rely on this stupid convention instead of the better creator code or a metadata model, but great that they now support longer file extensions.
^ abLeonard, Sean (March 2016). "The text/markdown Media Type". Request for Comments: 7763. Internet Engineering Task Force. Archived from the original on 22 March 2022. Retrieved 27 March 2022. This document registers the text/markdown media type for use with Markdown, a family of plain-text formatting syntaxes that optionally can be converted to formal markup languages such as HTML.
^ abHendler, James (10 November 2022). "Foreword by James Hendler". Aaron Swartz's A Programmable Web: An Unfinished Work(PDF). Synthesis Lectures on Data, Semantics, and Knowledge. Springer Nature Switzerland. pp. ix. doi:10.1007/978-3-031-79444-5. ISBN 978-3-031-79444-5. Retrieved 12 January 2024 – via Wikisource. This document was originally produced in "markdown" format, a simplified HTML/Wiki format that Aaron co-designed with John Gruber ca. 2004.
^ abKrewinkel, Albert; Winkler, Robert (8 May 2017). "Formatting Open Science: agilely creating multiple document formats for academic manuscripts with Pandoc Scholar" (PDF). PeerJ Computer Science. 3: 6. doi:10.7717/peerj-cs.112. Retrieved 12 January 2024. Markdown was originally developed by John Gruber in collaboration with Aaron Swartz, with the goal to simplify the writing of HTML documents
^Swartz, Aaron (2004-03-19). "Markdown". Aaron Swartz: The Weblog. Archived from the original on 2017-12-24. Retrieved 2013-09-01.
^Gruber, John. "Markdown". Daring Fireball. Archived from the original on 2004-03-11. Retrieved 2022-08-20.
^Cite error: The named reference md was invoked but never defined (see the help page).
^"Markdown: License". Daring Fireball. Archived from the original on 2020-02-18. Retrieved 2014-04-25.
^Leonard, Sean (March 2016). "Guidance on Markdown: Design Philosophies, Stability Strategies, and Select Registrations". Request for Comments: 7764. Internet Engineering Task Force. Archived from the original on 17 April 2022. Retrieved 27 March 2022. This document elaborates upon the text/markdown media type for use with Markdown, a family of plain-text formatting syntaxes that optionally can be converted to formal markup languages such as HTML. Background information, local storage strategies, and additional syntax registrations are supplied.
^"RMarkdown Reference site". Archived from the original on 2020-03-03. Retrieved 2019-11-21.
^ abCite error: The named reference philosophy was invoked but never defined (see the help page).
^"Daring Fireball: Introducing Markdown". daringfireball.net. Archived from the original on 2020-09-20. Retrieved 2020-09-23.
^Cite error: The named reference FutureOfMarkdown was invoked but never defined (see the help page).
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