Markdown to HTML Converter Online – Free & Fast Markdown to Web Format Tool

Paste Markdown Text

Supports GitHub Flavored Markdown with enhanced features

Upload Your Markdown File

Drag & drop your .md file here or click to browse

Supported formats: MD, MARKDOWN, TXT

About Markdown to HTML Converter

The Markdown to HTML Converter allows you to convert Markdown text or files into a complete, structured HTML document instantly. Whether you paste Markdown content or upload .md, .markdown, or .txt files, this tool processes your content and generates a fully formatted HTML output ready for download, preview, or copying.

It supports enhanced Markdown features including task lists, tables, footnotes, math expressions, and more.

What Is Markdown?

Markdown is a lightweight markup language used to format text using simple syntax. It is commonly used for:

  • Documentation files (README.md)

  • Technical writing

  • Blog posts

  • Static site content

  • Notes and documentation systems

Example Markdown:

# Heading **Bold text** - [x] Completed task - [ ] Pending task

Markdown is easy to write and read, but browsers cannot render it directly. It must be converted into HTML to display properly on websites.

What Is HTML Output?

HTML (HyperText Markup Language) is the standard language used to create web pages.

This tool converts your Markdown into a complete HTML document, including:

  • <!DOCTYPE html>

  • <html>, <head>, and <body> structure

  • A cleaned page title based on file name

  • Embedded CSS styling

  • MathJax integration for math rendering

The generated file is ready to open in any browser.

Key Features

Multiple Input Options

  • Paste Markdown text directly

  • Upload .md, .markdown, or .txt files

  • Drag and drop file upload support

  • Convert multiple files at once

Enhanced Markdown Support

The converter includes extended Markdown functionality:

  • Fenced code blocks

  • Tables

  • Task lists (- [x], - [ ])

  • Strikethrough (~~text~~)

  • Footnotes

  • Table of Contents (TOC)

  • Admonitions

  • Automatic line breaks

  • Smart punctuation (quotes, dashes, ellipses)

Math Support

Supports mathematical expressions:

  • Inline math: $x^2$

  • Block math:

    $$ E = mc^2 $$

Rendered using MathJax for proper display.

Automatic HTML Document Generation

Each conversion produces:

  • Full HTML page structure

  • Clean title extraction

  • Responsive layout styling

  • Print-friendly formatting

Built-in HTML Source Viewer

After conversion, the tool displays:

  • Syntax-highlighted HTML

  • Line numbers

  • Fold / Unfold code sections

  • Read-only CodeMirror editor

  • Bracket matching

Preview HTML Output

  • Opens a modal preview window

  • Renders the full converted HTML

  • Uses iframe for safe display

  • Supports closing via ESC key

Copy Full HTML Code

  • One-click copy to clipboard

  • Includes fallback copy method

  • Visual feedback (Copying → Copied)

Download Options

  • Download as HTML

  • Download as TXT (body content extracted)

  • Download all converted files as ZIP

Large File Handling

If the generated HTML is large:

  • A warning message appears

  • Viewer shows preview

  • Copy still includes complete HTML

How It Works

Step 1 – Add Your Markdown

Choose one method:

  • Paste Markdown text

  • Upload one or more Markdown files

Step 2 – Convert

Click Convert to HTML.
The server processes your Markdown using enhanced extensions and custom processors.

Step 3 – View Results

Each converted file appears with:

  • HTML source viewer

  • Copy button

  • Preview button

  • Download options

Step 4 – Download or Copy

You can:

  • Copy full HTML code

  • Preview rendered output

  • Download individual files

  • Download all as ZIP

Supported Markdown Features

This converter supports:

  • Headings (H1–H6)

  • Bold and italic formatting

  • Strikethrough text

  • Ordered and unordered lists

  • Task lists with checkboxes

  • Tables

  • Code blocks

  • Inline code

  • Blockquotes

  • Footnotes with backlinks

  • Table of Contents generation

  • Math expressions (inline & block)

  • Admonitions

  • Smart quotes and punctuation

Upload & Input Options

Paste Markdown Tab

  • Default active tab

  • Large text area

  • Auto-focus enabled

  • Displays character count preview

Upload File Tab

  • Supports multiple file selection

  • Drag & drop support

  • Displays file name and size

  • Remove files before conversion

HTML Code Viewer

The built-in HTML viewer provides:

  • Syntax highlighting (HTML mode)

  • Line numbers

  • Code folding

  • Fold all / unfold all toggle

  • Responsive height

  • Dark & light theme compatibility

This allows users to inspect generated HTML before copying or downloading.

Download Options Explained

Download as HTML

Downloads the complete generated HTML document.

Download as TXT

Extracts the <body> content and removes HTML tags to create plain text.

Download All

Creates a ZIP file containing all successfully converted HTML files.

Data Handling & Safety

  • Uploaded files are stored temporarily.

  • Converted HTML files are generated server-side.

  • HTML content is safely escaped before preview display.

  • Clipboard copy uses secure browser APIs.

  • No modification is made to original Markdown files.

Who Can Use This Tool?

This tool is ideal for:

  • Developers converting README files

  • Documentation writers

  • Technical content creators

  • Students writing assignments

  • Bloggers preparing web-ready content

  • Anyone working with Markdown files

The Markdown to HTML Converter provides a powerful and flexible way to transform Markdown into a fully structured HTML document. With support for extended Markdown features, task lists, math expressions, syntax-highlighted code viewing, and multiple download options, it streamlines the conversion process while maintaining clean and well-formatted output.

Convert your Markdown to HTML instantly and manage your output with preview, copy, and download options in one place.

Frequently Asked Questions

Find answers to common questions about our Markdown to HTML converter.

Yes. The tool allows uploading multiple Markdown files in one session. Each file is processed individually, and all successfully converted files appear separately in the results section.

The tool accepts only:

  • .md

  • .markdown

  • .txt

Any other file type is ignored during upload.

When you paste Markdown text, the tool treats it as a temporary Markdown file. It is converted the same way as uploaded files and is automatically cleaned up after conversion.

Markdown task lists using the syntax:

- [x] Task - [ ] Task

are converted into HTML lists with disabled checkbox inputs, ensuring the task state is preserved visually but cannot be edited.

The tool detects:

  • Inline math using $...$

  • Block math using $$ ... $$

These expressions are wrapped in MathJax-compatible HTML and rendered using MathJax in the final output.

Yes. Text written using:


 

~~example~~

is converted into proper HTML <del> elements.

If the generated HTML exceeds a certain size threshold, the tool:

  • Displays a warning message

  • Shows a preview in the viewer

  • Still allows copying and downloading the full HTML output