From GitHub READMEs to static site generators and internal wikis, markdown has become the standard format for technical documentation. That’s not by accident: it’s readable as plain text, easy to version, and works everywhere.
Readable as source
Documentation often lives next to code in a repo. Markdown is plain text, so it’s diff-friendly in Git and readable in any editor or on the web. You don’t need a special tool to understand a README or a docs file—just open it. That makes review and collaboration straightforward.
Version control and review
Because markdown is just text, it fits perfectly into Git. You get meaningful diffs, pull requests for doc changes, and a single source of truth. No binary formats or proprietary editors; the same workflow you use for code works for docs.
Renders everywhere
GitHub, GitLab, and Bitbucket render markdown in the browser. Static site generators (Jekyll, Hugo, MkDocs, Docusaurus) turn markdown into full documentation sites. Many API doc tools accept markdown or a close variant. Write once, publish in many places.
Enough structure, not too much
Headings, lists, code blocks, and tables cover most documentation needs. You don’t spend time on layout; you focus on content. For API docs, code examples in fenced blocks with language hints get syntax highlighting automatically in most platforms.
Easy to write and edit
You can edit markdown in any text editor or a dedicated markdown editor (like Modern Markdown Editor) with live preview. New contributors can start writing docs without learning a complex format. That lowers the barrier to keeping documentation up to date.
Practical next steps
Use markdown for READMEs, contribution guides, and internal docs. Keep a consistent style (e.g. heading levels, code block language tags). For larger doc sets, consider a static site generator and keep the content in markdown. If you need a quick place to draft or share a doc, an online markdown editor with export to HTML or raw .md will fit right into this workflow.