Markdown is a lightweight markup language that lets you format plain text using simple, readable syntax. It's the de-facto standard for READMEs, documentation, and notes — easy to write, easy to [diff](/diff), and renders beautifully across platforms.

Writing and previewing README files for GitHub or GitLab repositories before committing.

Drafting documentation or blog posts with live formatting — see rendered output side by side with your text.

Converting Markdown notes to PDF or PNG for sharing with people who don't have a Markdown viewer.