omd: Markdown library and tool in OCaml

Omd is an OCaml library designed to parse, manipulate, and print Markdown into
different formats. In addition to the library, a command-line tool omd is
included to easily convert markdown into HTML.

Omd aims for compliance with the CommonMark standard.
We are currently compliant with 0.30 of the ComonMark
spec.

Omd is developed on GitHub. If you need to report an issue, please do so at
https://github.com/ocaml/omd/issues.

Installation

The recommended way to install omd is via the [opam package manager][opam].

You can install versions published to opam with:

$ opam install omd

You can install the current development version from the GitHub repository with

$ opam pin git@github.com:ocaml/omd.git

Documentation

• View API docs online: https://ocaml.github.io/omd

• View the API docs locally: odig doc omd

Building from source

You can also build it manually from source with:

$ git clone https://github.com/ocaml/omd.git
$ cd omd
$ make build

You can run the test suite with

$ make test

Dependencies

The minimum version of OCaml required is 4.08.

Dependencies are tracked in the dune-project and can be
installed by running:

$ opam install . --deps-only
# or
$ make deps

History

Omd 1 was developed by Philippe Wang at OCaml
Labs in Cambridge.

Its development was motivated by at least these facts:

• We wanted an OCaml implementation of Markdown; some OCaml parsers of Markdown
  existed before but they were incomplete. It's easier for an OCaml project to
  depend on an pure-OCaml implementation of Markdown than to depend some
  interface to a library implemented using another language, and this is ever
  more important since Opam exists.

• We wanted to provide a way to make the contents of the
  OCaml.org website be essentially in Markdown instead of
  HTML. And we wanted to this website to be implemented in OCaml.

• Having an OCaml implementation of Markdown is virtually mandatory for those
  who want to use a Markdown parser in a Mirage
  application. Note that OMD has replaced the previous Markdown parser of
  COW, which has been developed as part
  of the Mirage project.

Omd 2 started development in 2020, beginning Nicolás Ojeda
Bär's redesign and rewrite, and is currently ongoing.
Omd 2 has yet to reach feature parity with Omd 1.

Thanks

Special thanks for feedback and contributions to this project goes out to:

• Christophe Troestler

• Ashish Argawal

• Sebastien Mondet

• Thomas Gazagnaire

• Daniel Bünzli

• Amir Chaudry

• Anil Madhavapeddy

• David Sheets

• Jeremy Yallop

• Nicolás Ojeda Bär

• Raphael Sousa Santos

• Corentin Leruth

• Bob Atkey

• please insert your name here if you believe you've been forgotten