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Markdown Cheat Sheet

Searchable Markdown cheat sheet with rendered previews and copy-ready snippets for CommonMark, GitHub, GitLab, Reddit, Discord, Slack, and Obsidian.

49 of 49

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Selected snippet

Heading 1

Top-level heading. Use one per document for the page title.

CommonMarkGitHubGitLabObsidianReddit

Setext form (underlined with equals signs) is allowed by CommonMark and many renderers.

Syntax

# Heading 1

Alternative syntax

Heading 1
=========

Rendered preview

Heading 1

Also searched as

h1 · title · page title · setext

Flavor legend

Each snippet lists the flavors that support it.

  • CommonMark

    The portable Markdown baseline. Most static-site generators, Pandoc, and modern renderers implement it.

  • GitHub

    GitHub Flavored Markdown. Adds tables, task lists, strikethrough, autolinked URLs, alerts, and footnotes.

  • GitLab

    GitLab Flavored Markdown. Mostly GFM-compatible with extra MathJax, mermaid, and table-of-contents tokens.

  • Obsidian

    Obsidian notes. Adds wiki-links, embeds, callouts, highlights, and inline tags.

  • Reddit

    Reddit comments. Supports headings, bold, italic, strikethrough, superscript, and code; ignores some inline HTML.

  • Discord

    Discord messages. Adds underline (__) and spoilers (||), supports a subset of fences and inline code.

  • Slack

    Slack messages. Uses *bold*, _italic_, ~strike~, and `code` with single delimiters and a single backtick.

Full reference table

Headings

  • Heading 1

    # Heading 1

  • Heading 2

    ## Heading 2

  • Heading 3

    ### Heading 3

  • Heading 4

    #### Heading 4

  • Heading 5

    ##### Heading 5

  • Heading 6

    ###### Heading 6

Emphasis

  • Bold

    **bold text**

  • Italic

    *italic text*

  • Bold and italic

    ***bold and italic***

  • Strikethrough

    ~~struck text~~

  • Underline (Discord and Obsidian)

    __underlined text__

  • Highlight

    ==highlighted text==

  • Subscript

    H~2~O

  • Superscript

    x^2^

  • Spoiler (Discord)

    ||hidden text||

Lists

  • Bulleted list

    - First item ...

  • Numbered list

    1. First item ...

  • Nested list

    - Outer item ...

Links and images

  • Inline link

    [link text](https://example.com)

  • Autolink (URL)

    <https://example.com>

  • Autolink (email)

    <name@example.com>

  • Reference-style link

    Read the [docs][1] for more. ...

  • Image

    ![alt text](path/to/image.png)

Code

  • Inline code

    Run `npm install` first.

  • Fenced code block

    ```js ...

  • Indented code block (legacy)

    function add(a, b) { ...

  • Slack code block

    ```code goes here on the same line```

Blockquotes

  • Blockquote

    > A line of quoted text. ...

  • Nested blockquote

    > Outer quote. ...

Tables

  • Basic table

    | Name | Score | ...

  • Table with column alignment

    | Left | Center | Right | ...

Horizontal rule

  • Horizontal rule

    ---

Breaks and escapes

  • Hard line break

    First line. ...

  • Paragraph break

    First paragraph. ...

  • Escape a Markdown character

    Use a backslash to escape \*literal asterisks\*.

Task lists

  • Task list

    - [ ] Open task ...

Footnotes and references

  • Footnote

    Here is a footnote reference[^1]. ...

  • Definition list

    Term ...

GitHub Flavored extras

  • GitHub alert

    > [!NOTE] ...

  • Collapsible section

    <details> ...

  • Mention

    Ping @username so they get a notification.

  • Issue and PR reference

    Fixes #123 and closes user/repo#456.

  • Emoji shortcode

    Tests passed :white_check_mark: shipped :rocket:.

Platform-specific syntax

  • Wiki link (Obsidian)

    Open [[Page name]] to jump to another note.

  • Embed (Obsidian)

    ![[Other note]]

  • Callout (Obsidian)

    > [!info] ...

  • Quote and superscript (Reddit)

    >!spoiler text!<

  • Block quote (Slack)

    &gt; Single-line quote ...

  • Table of contents (GitLab)

    [[_TOC_]]

This cheat sheet covers 49 Markdown snippets across the portable CommonMark baseline and the most popular flavors: GitHub Flavored Markdown, GitLab Flavored Markdown, Obsidian, Reddit, Discord, and Slack. Snippets render exactly as the named flavor would interpret them. Need to convert Markdown to HTML, count words inside Markdown, or generate a table of contents? Reach for the related tools below.

How to use

  1. Type a name (heading, table, task list, link), a Markdown character (**, > , ```), or the flavor (github, slack) into the search box.
  2. Use the Flavor pills to limit the catalog to CommonMark, GitHub, GitLab, Obsidian, Reddit, Discord, or Slack.
  3. Use the Family pills to narrow further to headings, emphasis, lists, links and images, code, tables, or any other group.
  4. Click any snippet card to pin it. The detail panel shows the syntax, alternative syntax, the rendered preview, supported flavors, and copy buttons.
  5. Open the Full reference table at the bottom and click Copy table TSV to paste the whole catalog into a wiki page, README, or onboarding doc.

About this tool

Markdown Cheat Sheet is a searchable, copy-ready reference for the Markdown syntax that writers, developers, and content teams reach for every day. Every snippet stores the exact characters to type, a short name and family, the flavors that accept it, an alternative form where one exists, longer notes for edge cases, and a hand-authored rendered preview that mirrors what the named flavor would emit so you can confirm the shape of the result at a glance without running a Markdown engine. The catalog covers the portable CommonMark baseline plus the most popular flavors: GitHub Flavored Markdown (tables, task lists, strikethrough, autolinked URLs, alerts, footnotes, mentions, issue references, and emoji shortcodes), GitLab Flavored Markdown (most of GFM plus table of contents and definition lists), Obsidian (wiki links, embeds, callouts, highlights), Reddit (spoilers, superscript), Discord (underline, spoilers, single-line fences), and Slack (single-asterisk bold, single-underscore italic, single-tilde strikethrough, triple-greater-than block quote). Snippets are grouped into thirteen families that match how people actually search: headings, emphasis, lists, links and images, code, blockquotes, tables, horizontal rule, breaks and escapes, task lists, footnotes and references, GitHub Flavored extras, and platform-specific syntax. Filters work in both directions: pick a family to scan one topic at a time, pick a flavor to see only what your target renderer accepts, or combine them to drill in further. Search matches against the snippet name, family label, summary, aliases, and the syntax itself, so type heading, table, task list, callout, footnote, escape, spoiler, or any actual Markdown characters like ** or > and the right snippet rises to the top. Click any card to pin the detail view, which exposes the syntax, the alternative syntax where one exists, the rendered preview at full size, the supported flavors, search aliases, and copy buttons for every form you might paste. A flavor legend explains what each flavor is and where it is rendered, and a full reference table at the bottom groups every snippet by family with a Copy table TSV button so you can drop the whole catalog into a wiki page, design-system docs, or onboarding handbook. Everything is bundled at build time and runs entirely in the browser. There is no upload, no external API, no remote dictionary, and nothing you click is sent to a server. Need to write Markdown interactively, generate a table of contents, build a Markdown table from data, or convert Markdown to HTML? Reach for the related tools at the bottom of the page.

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