Convert Markdown to HTML
Paste Markdown or drop a .md file and get the HTML, with a rendered preview next to it.
- Runs entirely in your browser
- Works offline
- No upload
- No sign-up
- No watermark
Loading the tool…
How it works
- Paste your Markdown, or drop a .md file.
- HTML is already selected.
- Copy the markup or download it.
Why nothing is uploaded
Every operation on this page is done by code running inside your browser tab, using the same engine that renders web pages. The file is read from disk into your tab’s memory, transformed there, and written back out as a download. It is never sent anywhere — not to us, not to a third party.
Verify it yourself
- Open your browser’s developer tools (F12) and select the Network tab.
- Load your file and run the tool.
- The only requests you will see fetch the tool’s own code — and, for a few heavy tools, their open-source engine from a public CDN — plus one small page-view ping to loreatec.jp (page address and title, nothing more). None of them carry your file.
Frequently asked questions
Which flavour of Markdown?
GitHub-flavoured Markdown via marked: tables, strikethrough, task lists, autolinks and fenced code blocks all work.
Is the HTML sanitised?
No — raw HTML inside your Markdown is passed through, because stripping it would break legitimate documents. Since nothing is uploaded and the preview is sandboxed, that is safe here; sanitise before publishing content written by someone else.
Is my document uploaded?
No. The file is read and converted inside this browser tab, on your own device. You can open the page, turn off the internet, and it still works. For a contract or a customer list, that is the guarantee that matters.