Markdown to HTML

Markdown to HTML Converter with Live Preview and File Upload

Markdown to HTML converts your Markdown source into clean, valid HTML markup ready for websites, email templates, and content management systems. The converter uses the marked library with GitHub-Flavored Markdown enabled, supporting fenced code blocks, tables, task lists, strikethrough, and all standard Markdown elements. Type or paste Markdown in the code editor on the left and the HTML output appears instantly on the right. Upload .md files using the drag-and-drop zone or click the upload button to load content from your computer. Everything runs in your browser with no data sent to any server.

Online Markdown to HTML Converter for Developers and Content Teams

Converting Markdown to HTML by hand is error-prone and slow, especially when dealing with complex documents that include tables, code blocks, and nested lists. This converter handles the parsing automatically using the same marked library that powers GitHub rendering. Paste your Markdown into the code editor and the HTML fragment appears in real time on the right panel. The output includes properly escaped entities, correctly nested tags, and clean formatting that validates against HTML standards.

GitHub-Flavored Markdown Support

The converter supports GFM extensions beyond standard CommonMark: fenced code blocks with language identifiers, tables with column alignment, task lists using checkbox syntax, strikethrough with double tildes, and automatic URL linking. Your GitHub README files, wiki pages, and issue descriptions convert with full fidelity.

Upload Markdown Files Directly

Drag and drop .md, .markdown, .mdown, or .txt files onto the upload zone to load them into the editor instantly. The file content populates the code editor and the HTML output generates automatically. No manual copy-paste needed for local files.

Live HTML Preview for Markdown Documents

The HTML Preview tool renders your Markdown as styled, formatted HTML in a live preview pane. The split-pane layout keeps your source code on the left and the rendered output on the right. Every keystroke triggers a re-render within 300 milliseconds, so you see exactly how your document will look before exporting. The preview uses DOMPurify to sanitize all rendered HTML, preventing any potentially harmful content from executing.

Real-Time Rendering with Sanitization

Each time you type, the marked parser converts your Markdown to HTML and DOMPurify removes any unsafe elements before the preview updates. This combination delivers fast, accurate rendering while keeping your browser secure. Tables render with proper borders and alignment, code blocks display with syntax-friendly styling, and blockquotes appear with visual indicators.

HTML to Markdown Reverse Converter

Sometimes you need to go the other direction. The HTML to Markdown tool takes raw HTML markup and converts it back to clean Markdown syntax. Paste HTML from a web page, CMS export, or email template and get Markdown output ready for GitHub, documentation wikis, or any editor that supports Markdown. The converter handles headings, paragraphs, bold, italic, links, images, code blocks, blockquotes, tables, and lists. Unsupported HTML tags are stripped while preserving their text content.

Converting CMS Content to Markdown

Migrating content from a CMS that stores HTML to a Markdown-based system requires converting existing pages. Paste the HTML source into this tool and copy the Markdown output. Tables, links with URLs, and nested lists all convert to their proper Markdown equivalents. Upload .html files directly using the file upload zone for larger documents.

Markdown to Plain Text for Clean Output

The plain text tool strips every piece of Markdown syntax and returns pure prose. Hash marks from headings, asterisks from bold and italic, backticks from code, link URLs, image references, list markers, blockquote indicators, and HTML tags are all removed. The result is clean text you can paste into SMS messages, plain-text email clients, form fields, or any system that does not render formatting.

Cleaning AI-Generated Markdown

AI assistants like ChatGPT, Claude, and Gemini frequently respond with Markdown formatting even when the output destination does not support it. Asterisks, hash marks, and backticks clutter the response. Paste the AI output into the plain text tool and get clean prose in one step.

Free Markdown to HTML Converter with Batch Processing

The Batch Convert tool lets you upload multiple Markdown files and convert them all to HTML simultaneously. Each file processes independently, and the results display in a scrollable list showing a preview of the generated HTML. Download individual files or click Download All to save everything at once. Add more files to an existing batch at any time. This is ideal for documentation projects, static site migrations, or converting entire collections of Markdown notes into HTML pages.

No Signup, No Limits, Complete Privacy

Every tool on this page is completely free with no account required. There are no file size limits, no daily usage caps, and no watermarks on the output. All processing happens locally in your browser using JavaScript. Your Markdown content and HTML output never leave your device, making this a secure choice for proprietary documentation, internal communications, and confidential content.

Related Markdown and Developer Tools

If you work with Markdown regularly, these tools complement what you can do here:

• Markdown Viewer - live Markdown preview with multiple conversion tools and syntax cheatsheet
• Markdown Table Generator - build Markdown tables from CSV, JSON, or a visual grid editor
• Markdown Editor - full-featured Markdown editor with formatting toolbar and live preview
• HTML Viewer - live HTML preview, minifier, and tag stripper
• JSON Formatter - format, validate, minify, and convert JSON data
• Code Formatter - format HTML, CSS, JSON, XML, and JavaScript in one tool