How to Preview Markdown Online
Type or paste your Markdown text into the editor pane on the left side of the screen. The tool supports the full GitHub Flavored Markdown (GFM) specification, including headings, bold, italic, strikethrough, links, images, code blocks with syntax highlighting, blockquotes, ordered and unordered lists, task lists (checkboxes), tables, and horizontal rules.
The live preview pane on the right updates instantly as you type, showing exactly how your Markdown will render as HTML. There is no delay or button to press — every keystroke triggers a re-render. This side-by-side view lets you write and proofread simultaneously, catching formatting issues as they happen rather than after publishing.
Use the formatting toolbar above the editor for quick insertion of common Markdown syntax. Buttons for headings, bold, italic, links, images, code blocks, lists, and tables insert the correct syntax at your cursor position. This is especially helpful if you are new to Markdown syntax or need to insert complex structures like tables without memorizing the pipe-and-dash format.
When your document is ready, use the Export HTML button to download the rendered output as a clean HTML file. The exported HTML preserves all formatting, including syntax-highlighted code blocks and properly structured tables. You can use this HTML directly in a blog post, documentation page, or email template.
Why Use UtilDaily's Markdown Preview?
- Full GitHub Flavored Markdown (GFM) support — tables, task lists, strikethrough, fenced code blocks, and autolinks all render correctly
- Instant live preview — the rendered output updates on every keystroke with no button press required
- Export to clean HTML — download the rendered document as an HTML file for use in blogs, documentation, or email templates
- Table support with proper alignment — create complex data tables using pipe syntax with left, center, and right alignment
- Code block syntax highlighting — fenced code blocks with language identifiers render with appropriate highlighting
- 100% browser-based — your Markdown content never leaves your device or touches any server
- No file upload needed — paste content directly or type from scratch in the built-in editor
Frequently Asked Questions
What is Markdown?
Markdown is a lightweight markup language created by John Gruber in 2004. It uses plain-text formatting syntax that is easy to read and write, which gets converted to structurally valid HTML. For example, # Heading becomes an H1, **bold** becomes bold text, and [link](url) becomes a clickable hyperlink. Markdown is used for README files on GitHub, documentation, blog posts, forum comments, chat messages, and static site generators. Its key advantage over HTML is readability — Markdown source files are easy to read even without rendering.
What is GitHub Flavored Markdown (GFM)?
GitHub Flavored Markdown (GFM) is a superset of standard Markdown maintained by GitHub. It adds several features commonly needed by developers: tables (using pipe | syntax), task lists (checkboxes with - [ ] and - [x]), strikethrough text (~~deleted~~), fenced code blocks with language-specific syntax highlighting (using triple backticks), autolinked URLs, and emoji shortcodes. GFM is the de facto standard for Markdown in developer tools and is specified in the GFM Spec maintained by GitHub.
How do I create a table in Markdown?
Markdown tables use pipes (|) to separate columns and hyphens (-) to create the header row separator. A basic table looks like: | Header 1 | Header 2 | followed by | --- | --- | and then data rows like | Cell 1 | Cell 2 |. You can align columns by adding colons to the separator row: :--- for left-align, :---: for center, and ---: for right-align. Tables must have a header row — you cannot create a headerless table in standard Markdown.
What is the difference between Markdown and HTML?
Markdown is a simplified writing format that compiles (converts) to HTML. HTML is the actual markup language that browsers render. Markdown is much easier to write and read as source text — for example, **bold** in Markdown versus <strong>bold</strong> in HTML. Most Markdown processors allow you to embed raw HTML within Markdown for cases where Markdown syntax is insufficient (like complex layouts, custom attributes, or embedded media). The rendered output of Markdown is always HTML.
Can Markdown include images?
Yes. The image syntax is , where the alt text describes the image for accessibility and the URL points to the image file. For example: . You can also add an optional title: . In online Markdown previewers like this one, images from external URLs will render in the preview. Local file paths (like ./images/photo.jpg) will not load in a browser-based previewer since the tool cannot access your local filesystem.
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