This is an overview of Markdown's syntax.
This is italicized, and so is this.
This is bold, and so is this.
You can use italics and bold together if you have to.
There are three ways to write links. Each is easier to read than the last:
Here's an inline link to Google. Here's a reference-style link to Google. Here's a very readable link to Yahoo!.
The link definitions can appear anywhere in the document -- before or after the place where you use them. The link definition names (
Yahoo!) can be any unique string, and are case-insensitive;
[Yahoo!] is the same as
You can also add a
title attribute to a link, which will show up when the user holds the mouse pointer it. Title attributes are helpful if your link text is not descriptive enough to tell users where they're going. (In reference links, you can use optionally parentheses for the link title instead of quotation marks.)
Here's a poorly-named link. Never write "[click here]". Trust me.
: http://www.w3.org/QA/Tips/noClickHere (Advice against the phrase "click here")
You can write bare URLs by enclosing them in angle brackets:
My web site is at http://attacklab.net.
If you use this format for email addresses, Showdown will encode the address to make it harder for spammers to harvest. Try it and look in the HTML Output pane to see the results:
Humans can read this, but most spam harvesting robots can't: email@example.com
There are two ways to do headers in Markdown. (In these examples, Header 1 is the biggest, and Header 6 is the smallest.)
You can underline text to make the two top-level headers:
The number of
- signs doesn't matter; you can get away with just one. But using enough to underline the text makes your titles look better in plain text.
You can also use hash marks for all six levels of HTML headers:
# characters are optional.
You can insert a horizontal rule by putting three or more hyphens, asterisks, or underscores on a line by themselves:
You can also use spaces between the characters:
All of these examples produce the same output.
A bulleted list:
A numbered list:
A double-spaced list:
This list gets wrapped in
So there will be extra space between items
You can put other Markdown blocks in a list; just indent four spaces for each nesting level. So:
Lists in a list item:
Multiple paragraphs in a list items:
It's best to indent the paragraphs four spaces You can get away with three, but it can get confusing when you nest other things. Stick to four.
We indented the first line an extra space to align it with these paragraphs. In real use, we might do that to the entire list so that all items line up.
This paragraph is still part of the list item, but it looks messy to humans. So it's a good idea to wrap your nested paragraphs manually, as we did with the first two.
Blockquotes in a list item:
Skip a line and indent the >'s four spaces.
Preformatted text in a list item:
Skip a line and indent eight spaces. That's four spaces for the list and four to trigger the code block.
Blockquotes are indented:
The syntax is based on the way email programs usually do quotations. You don't need to hard-wrap the paragraphs in your blockquotes, but it looks much nicer if you do. Depends how lazy you feel.
You can put other Markdown blocks in a blockquote; just add a
> followed by a space:
Parragraph breaks in a blockquote:
The > on the blank lines is optional. Include it or don't; Markdown doesn't care.
But your plain text looks better to humans if you include the extra
Blockquotes within a blockquote:
A standard blockquote is indented
A nested blockquote is indented more
You can nest to any depth.
Lists in a blockquote:
- A list in a blockquote
- With a > and space in front of it
- A sublist
Preformatted text in a blockquote:
Indent five spaces total. The first one is part of the blockquote designator.
Images are exactly like links, but they have an exclamation point in front of them:
![Valid XHTML] (http://w3.org/Icons/valid-xhtml10).
The word in square brackets is the alt text, which gets displayed if the browser can't show the image. Be sure to include meaningful alt text for blind users' screen-reader software.
Just like links, images work with reference syntax and titles:
This page is .
Markdown does not currently support the shortest reference syntax for images:
Here's a broken !checkmark.
But you can use a slightly more verbose version of implicit reference names:
The reference name (
valid icon) is also used as the alt text.
If you need to do something that Markdown can't handle, you can always just use HTML:
Strikethrough humor is
Markdown is smart enough not to mangle your span-level HTML:
Markdown works fine in here.
Block-level HTML elments have a few restrictions:
You can include preformatted text in a Markdown document.
To make a code block, indent four spaces:
printf("goodbye world!"); /* his suicide note was in C */
The text will be wrapped in
` tags, and the browser will display it in a monospaced typeface. The first four spaces will be stripped off, but all other whitespace will be preserved.
You cannot use Markdown or HTML within a code block, which makes them a convenient way to show samples of Markdown or HTML syntax:
<blink> You would hate this if it weren't wrapped in a code block. </blink>
You can make inline
<code> tags by using code spans. Use backticks to make a code span:
<Tab> key, then type a
(The backtick key is in the upper left corner of most keyboards.)
Like code blocks, code spans will be displayed in a monospaced typeface. Markdown and HTML will not work within them:
Markdown italicizes things like this:
I *love* it.
Don't use the
<font> tag; use CSS instead.