⚙️ WasmTools

Markdown to HTML

Convert Markdown to clean HTML instantly, right in your browser. Free, no signup, no upload — runs 100% in your browser.

Loading WebAssembly engine…

Use it in your terminal (or let an AI agent run it)

This tool also ships as a command-line version in the wasm-tools-cli npm package — the exact same engine as this page, running locally on your machine.

npx wasm-tools-cli md2html notes.md > notes.html
🔒 Runs entirely in your browser — your files never leave your device.

About Markdown to HTML

Markdown to HTML is a free online data tool that runs entirely in your browser. There is nothing to install and no account to create: open the page, use the tool, and download the result. Because all processing happens locally on your device (via WebAssembly), your files and text are never uploaded to any server.

How to use Markdown to HTML

  1. Paste or type your content into the input box.
  2. Choose the operation (and any options) and click the corresponding button.
  3. Copy the result or download it as a file.

Frequently asked questions

Is Markdown to HTML really free?

Yes — Markdown to HTML is completely free, with no account, no watermark, and no usage limits. It runs entirely in your browser.

Are my files uploaded to a server?

No. All processing happens locally on your device using WebAssembly. Your files never leave your computer — close the tab and nothing remains.

Which browsers are supported?

Any modern browser on desktop or mobile: Chrome, Firefox, Safari, and Edge.

Related tools

Base64 Encoder / Decoder

Encode text to Base64 or decode Base64 back to text, instantly in your browser.

WebAssemblyCLI / agent

Case Converter

Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, and kebab-case.

WebAssemblyCLI / agent

Color Converter

Convert colors between HEX, RGB, and HSL formats instantly.

WebAssemblyCLI / agent

CSS Formatter

Beautify (pretty-print) minified or messy CSS instantly, right in your browser.

runs locally

CSV to JSON Converter

Convert CSV data to a JSON array of objects, using the header row as keys.

WebAssemblyCLI / agent

Hash Generator

Calculate MD5, SHA-1, SHA-256, SHA-512, and CRC32 checksums of any text.

WebAssemblyCLI / agent