Markdown Viewer & Preview
Preview and render Markdown content in real-time. View formatted output, export to HTML, and test your Markdown syntax with live updates and multiple theme options.
Markdown Input
Preview
Your markdown preview will appear here
About Markdown Viewer & Preview
A Markdown Viewer is an essential tool for writers and developers who work with Markdown files. This powerful viewer provides real-time preview of Markdown content, supporting GitHub Flavored Markdown with features like tables, task lists, code syntax highlighting, and more. Switch between different themes, export your content as HTML or Markdown files, and enjoy a distraction-free writing experience with instant visual feedback.
Why use a Markdown Viewer & Preview?
Using a Markdown Viewer enhances your writing workflow by providing immediate visual feedback as you type, helping you catch formatting errors before publishing, and ensuring your content looks exactly as intended. It's perfect for creating documentation, blog posts, README files, and any content that uses Markdown formatting, saving time by eliminating the need to constantly switch between editing and preview modes.
Who is it for?
This tool is ideal for technical writers creating documentation, developers writing README files and code documentation, bloggers using Markdown-based platforms, students taking notes in Markdown format, content creators working with static site generators, and anyone who wants to preview and validate their Markdown content before publishing or sharing.
How to use the tool
Type or paste your Markdown content in the editor or upload a .md file
Watch the live preview update automatically as you type
Choose from different preview themes (GitHub, Dark, or Minimal)
Toggle options like line numbers in code blocks or disable live preview
Export your content as HTML or download the Markdown file for sharing
Frequently Asked Questions
How do I preview Markdown rendering?
Paste your Markdown into the input area and see the rendered HTML preview in real-time. Side-by-side view shows raw Markdown on the left, rendered output on the right. Supports CommonMark + GFM extensions: tables, task lists, fenced code blocks, strikethrough. Useful for: drafting README files, blog posts, documentation; previewing before committing to a repository. Runs entirely in your browser — your Markdown never leaves the device.
What's the difference between Markdown Viewer and Markdown-to-HTML?
Both convert Markdown to HTML. [Markdown to HTML](/tools/markdown-to-html/) is conversion-focused — outputs the HTML source for copying into another context. Markdown Viewer is preview-focused — renders the HTML for visual review. The underlying conversion is the same; the UI emphasis differs. Use Markdown Viewer to draft and preview; use Markdown to HTML to extract the HTML output for embedding elsewhere.
Is my Markdown sent to a server?
No — rendering runs entirely in your browser via JavaScript (markdown-it, marked.js, or similar library). Your Markdown never reaches a server, never gets logged. Verify in DevTools' Network tab: zero HTTP requests during preview. Safe for sensitive drafts (technical specs, internal documentation, confidential notes).
What Markdown features are supported?
CommonMark + GFM extensions. Headings, bold/italic, lists, links, images, blockquotes, code blocks with syntax highlighting hints, tables, task lists, strikethrough. Some viewers add: emoji shortcodes (`:smile:` → 😊), math notation (LaTeX), diagrams (Mermaid), footnotes. For specialized features, check the specific tool's documentation. Standard documentation Markdown works universally.
Does this render syntax-highlighted code blocks?
Yes — fenced code blocks with language identifiers (` ```python `) are rendered with syntax colouring via a JavaScript highlighter (Prism.js, highlight.js, or similar). Common languages all supported: javascript, typescript, python, go, rust, ruby, html, css, json, yaml, bash, sql. The colours match standard themes (Atom, GitHub, VS Code-like). For exporting the rendered output, copy the visible content or use 'Markdown to HTML' for the source.
How do I preview GitHub README locally before committing?
Two approaches. (1) Use this Markdown Viewer — paste the README content and see the rendered result. Close approximation of GitHub's rendering. (2) For exact GitHub fidelity, use a tool that targets the GitHub spec specifically (such as `markdown` CLI with GFM extensions, or the GitHub Markdown rendering API). Most differences are minor: emoji shortcodes (GitHub renders `:emoji:` differently than standalone tools), task list rendering, and some GFM extensions. For most use cases, this tool's preview is close enough.
Can I export the rendered output as a PDF or image?
Not directly in this tool. For PDF: use your browser's Print → Save as PDF feature, with the preview view as the source. For images: take a screenshot of the rendered view. For programmatic PDF generation from Markdown, use tools like Pandoc (`pandoc input.md -o output.pdf`) or markdown-to-pdf libraries. For the simplest use case (viewing and sharing), copy the rendered HTML via [Markdown to HTML](/tools/markdown-to-html/) and embed in a document or page.
What's the best Markdown editor for serious writing?
Depends on use case. **VS Code** with Markdown All in One extension: free, powerful, integrates with Git. **Typora**: WYSIWYG (no preview pane needed). **Obsidian**: links between Markdown notes, knowledge management. **iA Writer / Bear**: distraction-free writing. **Notion / Roam**: cloud-based, collaboration. For technical documentation in repos, VS Code is the standard. For long-form writing, Typora or iA Writer. This online viewer is for quick previews and ad-hoc Markdown work — not full editor replacement.
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