Markdown Editor Guide

Markdown Editor Guide

Markdown is a lightweight markup language for documents, notes, READMEs, and more. SheetEdit Tools offers a free online Markdown editor with local file support, live preview, and export. This guide covers basic syntax and usage tips.

What is Markdown?

Markdown is a plain-text formatting syntax. You write symbols like #, **, and - in a normal text file; a renderer turns them into headings, bold text, lists, links, and code blocks. It is widely used for README files, documentation, and notes because the source stays readable and diffs well in version control.

Basic Markdown syntax

Headings

Use # for heading levels. Number of # = level 1–6:

# Heading 1
## Heading 2
### Heading 3

Bold and italic

• Bold: **text** or __text__
• Italic: *text* or _text_

Lists

Unordered: Start with -, *, or +:

- Item one
- Item two

Ordered: Number followed by period:

1. First step
2. Second step

Links and images

• Link: [display text](URL)
• Image: ![alt text](image URL)

Code

• Inline: `code`
• Block: Wrap with triple backticks, optional language:

```javascript
console.log("Hello");
```

Blockquote

Start with >:

> This is a blockquote.

Tables

| Col1 | Col2 |
|------|------|
| A    | B    |

Using the SheetEdit Tools editor

1. Open the Markdown Editor page.
2. Type or paste Markdown in the left editor pane.
3. View live preview on the right.
4. Open local .md or .txt files to edit.
5. Use Export to save as a Markdown file.

All editing runs in your browser. No content is uploaded to our servers.

Browse more guides and tutorials at the Article Index.