Markdown Preview
Write Markdown on the left and watch the rendered HTML update live on the right — free, instant and private. Everything runs in your browser, so your text is never uploaded, then you can copy or download the generated HTML.
How to use the Markdown Preview
- Write or paste Markdown. Type in the editor on the left, or press Load sample to see headings, lists, tables, code blocks and links in action.
- Watch the live preview. The right pane re-renders as you type, showing exactly how your Markdown becomes formatted HTML — no build step or refresh needed.
- Copy or download the HTML. Grab the rendered HTML with Copy HTML, save a ready-to-open Download HTML page, keep your source as a .md file, or open View HTML source to inspect the markup.
About this tool
Markdown is a lightweight plain-text formatting syntax used across GitHub, Reddit, static site generators, documentation, chat apps and note-taking tools. This free online Markdown previewer converts your text to HTML with a fast, standards-based parser that supports GitHub Flavored Markdown (GFM): headings, bold and italic text, ordered and unordered lists, task lists, tables, fenced code blocks, blockquotes, horizontal rules, links and images. It is handy for drafting a README, checking how a comment will render before you post it, or turning notes into clean HTML you can paste into a website.
The entire conversion happens locally in your browser using the bundled parser — nothing you type is uploaded, stored or logged, so it is safe for private documentation, unpublished articles or work notes, and it keeps working offline once the page has loaded. The preview is displayed with a lightweight sanitizer that strips scripts and inline event handlers so a stray HTML snippet cannot run, while the Copy HTML output gives you the faithful, unmodified conversion of your Markdown.
Frequently asked questions
Which Markdown flavor does this support?
It uses the Marked parser configured for GitHub Flavored Markdown (GFM). That means standard CommonMark plus popular extensions such as tables, fenced code blocks, task list checkboxes and automatic linking. Some site-specific extras (like GitHub emoji shortcodes or footnotes) are not part of core GFM and will appear as plain text.
Is my text uploaded anywhere?
No. The Markdown-to-HTML conversion runs entirely inside your browser with JavaScript. Your text never leaves your device, which makes the tool safe for private notes, drafts and internal documentation, and it continues to work with no internet connection once loaded.
What is the difference between "Copy HTML" and "Download HTML page"?
Copy HTML copies just the rendered HTML fragment — the tags for your content — which is what you paste into a CMS, email template or another page. Download HTML page saves a complete, self-contained .html file with a document wrapper and basic styling that you can open directly in any browser.
Can I use raw HTML inside my Markdown?
Yes. Markdown lets you mix in raw HTML, and it is passed through to the generated HTML output. In the on-screen preview, a small sanitizer removes <script> tags and inline event handlers as a safety measure, so what you see rendered is safe even though the copied HTML keeps your original markup.
How are the word count and reading time calculated?
They are measured from the rendered text (with Markdown symbols removed), so counts reflect the actual readable content. Reading time uses an average silent-reading speed of about 225 words per minute; your own pace may differ.