Home → Markdown

What is Markdown?

Markdown is a lightweight way to format plain text. You add a few simple symbols — like # for a heading or - for a list — and the text stays perfectly readable as-is, while tools can render it as clean formatted output (HTML, PDF, slides, and more).

A quick example

The Markdown on the left produces the formatted result on the right:

# Grocery list

A **quick** example of *Markdown*.

- Apples
- Bananas
- [ ] Buy milk

[Visit the cheat sheet](https://anythingmarkdown.com/markdown/cheat-sheet)

Why Markdown exists

Markdown was created in 2004 by John Gruber, with input from Aaron Swartz. The goal was simple: a plain-text format that's easy to read and write by hand, but that converts directly into structurally valid HTML. Unlike a word processor's hidden formatting, a Markdown document is just text — so it works everywhere, never breaks, and stays readable in any editor decades later.

Where you'll see Markdown

• Developer tools — GitHub/GitLab READMEs, issues, and pull requests.
• Communities — Reddit, Stack Overflow, Discord, and most chat apps.
• Docs & notes — documentation sites, Obsidian, Notion, and static-site generators.
• AI tools — ChatGPT, Claude, and others both read and write Markdown.

Why Markdown is ideal for AI & LLMs

When you paste a document into an AI model, format matters. Markdown is the sweet spot:

• Structure survives. Headings, lists, and tables stay intact instead of collapsing into a wall of text — so the model understands the document's shape.
• Fewer tokens. Markdown is far more compact than HTML or a raw PDF dump, so prompts are cheaper and faster.
• Better retrieval. Clean, sectioned text chunks well for RAG pipelines, improving answer quality.

That's exactly why we built AnythingMarkdown — it turns any PDF, Word, PowerPoint, Excel, or image into clean, AI-ready Markdown.

Learn the syntax

• Markdown Cheat Sheet — the full syntax reference with copyable examples.
• Tables · Links & images · Code blocks
• Why Markdown is best for LLMs — structure, tokens, and RAG.

Free tools

• Live Markdown Editor — write Markdown and see it render instantly.
• Markdown → HTML · HTML → Markdown
• Convert a document — turn a PDF, Word, Excel, or image into Markdown.