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SideDock
Desktop Side Utility
Type Github-Flavored Markdown in the editor on the left and see the rendered HTML preview on the right instantly. All typing stays in your browser.
Preview your Markdown as beautifully rendered HTML with this free online Markdown preview tool. It supports GitHub Flavored Markdown (GFM) including headings, lists, blockquotes, code blocks with syntax highlighting, tables, and inline formatting. This ensures your README files, documentation, and blog posts look exactly as intended before you hit publish.
Created by John Gruber in 2004, Markdown is a lightweight markup language with plain-text formatting syntax. Its primary design goal was to make text as readable and easy to construct as possible, allowing users to format text without relying on heavy WYSIWYG (What You See Is What You Get) editors or complex HTML tags.
Markdown has become the de facto standard for developers, technical writers, and content creators. It powers README files on GitHub, formatting on Reddit, static site generators like Jekyll and Hugo, and documentation for almost every major software library in existence. Because it is essentially plain text, Markdown is incredibly portable, future-proof, and can be easily version-controlled using Git.
While the original Markdown specification provided a solid foundation, developers needed more robust features. Enter GitHub Flavored Markdown (GFM). GFM is a strict superset of standard Markdown adopted by GitHub to enhance documentation workflows natively on its platform. Our online Markdown previewer fully supports GFM natively in your browser.
GFM introduces crucial quality-of-life enhancements specifically designed for technical writing, including natively rendering tables without typing raw HTML, task lists (checkboxes), strikethrough text, and most famously, fenced code blocks. Standard Markdown required users to indent code by four spaces, whereas GFM introduced the triple backtick (` ``` `) syntax, allowing developers to specify the programming language for intelligent syntax highlighting.
Whether you're drafting documentation or writing a quick blog snippet, mastering the basic syntax will dramatically speed up your writing process:
#). A
single hash creates an <h1>, two hashes create an <h2>, and so on
up to six layers deep.-) or an
asterisk (*). Create numbered lists by typing 1. , 2. , etc. You
can easily nest lists by indenting the items naturally.[Google](https://google.com). Adding images is virtually identical, just prepend an
exclamation mark: .
*italic*) renders as italics; two asterisks (**bold**) renders as
bold text natively.
>). This visually indents the text in the rendered HTML output.No, this tool does not save your typing to any server or cloud database. Everything you type is processed instantly and purely inside your browser using client-side JavaScript. This ensures 100% privacy for your notes and documentation, meaning your data disappears securely when you close the tab. If you need to keep your content, remember to use the "Download .md file" button securely.
Yes. Markdown natively supports falling back to raw HTML. If there corresponds to a layout or formatting
option that Markdown doesn't natively cover (like centering an image, or adding complex HTML
div containers), you can usually type standard HTML tags directly into the editor and they
will be beautifully rendered in the preview pane alongside your Markdown text.
Once you are completely satisfied with how your Markdown renders visually in our previewer, you can simply click the "Copy HTML Source" button securely located at the bottom of the tool. This will grab the fully compiled and clean HTML equivalent of your document so you can instantly paste it legitimately into your website template, email client, or Content Management System natively.