Markdown parser, done right. Commonmark support, extensions, syntax plugins, high speed, all in one. Gulp and metalsmith plugins are available. Used by Facebook, Docusaurus, and many others! Supports the CommonMark spec + syntax extensions + sugar (URL auto-linking, typographer). Configurable syntax! You can add new rules and even replace existing ones. By default, remarkable is configured to be similar to GFM, but with HTML disabled. This is easy to change if you prefer different settings...