Markdown → HTML

Paste Markdown, get HTML. Instantly. Offline.

You have Markdown. You need HTML. That's it — this tool does exactly that, with zero friction. Paste your Markdown on the left and see the rendered HTML on the right. No accounts, no uploads, no waiting.

Also works with JSON: if your content is stored in a JSON payload, Markdown → HTML can extract the Markdown from it before rendering.

Instant. Private. Works completely offline after the page loads.

User Manual

Overview

Markdown → HTML is a single-page tool that converts Markdown text to rendered HTML in real time. It uses marked.js for parsing and Tailwind CSS for styling the preview. Everything runs in your browser — nothing is sent to a server.

Basic Usage

Converting Markdown

  1. Paste or type your Markdown text into the Markdown Input panel on the left.
  2. The Rendered HTML panel on the right updates instantly as you type.
  3. Click Copy HTML to copy the rendered HTML to your clipboard.

Clearing the input

Click Clear to empty the input field and start fresh.

Working with JSON

Some content management systems and APIs deliver Markdown wrapped inside a JSON object. If your clipboard or file contains JSON with Markdown values inside it:

  1. Paste the JSON into the Markdown Input panel.
  2. Click Extract from JSON.
  3. The tool pulls the Markdown string out of the JSON and renders it.
Tip: This is useful when copying API responses from tools like ChatGPT, Claude, or CMS APIs that return Markdown inside a JSON envelope.

Supported Markdown Features

Markdown → HTML supports standard Markdown syntax via marked.js, including:

Privacy

No data is sent anywhere. The tool works completely offline after the initial page load.

About this tool

Technologies used:

marked.js Tailwind CSS Vanilla JS

Built with:

Grok 4.3