Markdown Preview
This free Markdown tool renders your Markdown to formatted HTML the moment you type, with a live editor and preview. Open a local .md file to read it, switch to full-screen for a distraction-free view, and toggle between Edit, Preview and Split. Everything runs on your device and the output is sanitized locally, so nothing is ever uploaded — handy as a lightweight Markdown viewer on your phone.
Drop a Markdown file here to view it
How to use Markdown Preview
- 1 Tap “Open .md file” (or drag a Markdown file onto the page) to load and read a local document — nothing is uploaded.
- 2 Or type/paste Markdown into the editor and watch the preview update live.
- 3 Use the Edit / Preview / Split toggle to focus on writing or reading.
- 4 Tap “Full screen” for a distraction-free reading view — great on mobile.
Frequently asked questions
Is my Markdown uploaded anywhere?
No. The Markdown is parsed and rendered entirely in your browser with JavaScript, and the HTML is sanitized locally before display. Your text never leaves your device.
Which Markdown features are supported?
It uses the marked parser, so common Markdown works — headings, bold and italic, bullet and numbered lists, links, blockquotes, and inline or fenced code.
Is the rendered HTML safe?
Yes. Output is run through DOMPurify in your browser, which strips unsafe scripts and markup so the preview can't run malicious code.
Does the Markdown preview work offline?
Yes. GoodWebTools is a PWA, so once the page has loaded once it keeps working with no internet connection.