Markdown is a lightweight markup language that lets you format text using plain-text syntax. It's widely used for README files, documentation, forum posts, and static site content because it's readable as-is while also converting cleanly to HTML.

Headers — Use # through ###### for heading levels. # Title becomes an H1, ## Section becomes an H2, and so on.

Formatting — Wrap text in ** or __ for bold, * or _ for italic, and ~~ for strikethrough.

Lists — Use - or * for unordered lists, and numbers for ordered lists. Indent items for nested lists.

Code — Use backticks for inline code (`code`) and triple backticks (```) for fenced code blocks with optional language syntax highlighting.

Links & Images — [text](url) creates a hyperlink. ![alt](src) embeds an image. Both support relative and absolute URLs.

Tables — Use pipes

Use this editor to draft documentation, prepare README files for your projects, format blog posts, or learn Markdown syntax with instant visual feedback.