Type Markdown on one side and watch the preview track your scrolling on the other (stacked on phones). The renderer is implemented locally and covers a documented CommonMark+GFM subset; raw HTML renders escaped as text and URLs are restricted to safe schemes. Copy the HTML or download .md/.html.
Privacy ledger
Data acquired
None.
Libraries used
Lit 3 — bundled into the tool file itself.
Data stored
None.
Data transmitted
None.
Use it on your own page
Download the tool as a single self-contained HTML file: readable source with the Lit library included, zero network requests — it works opened straight from your disk, and you can customize everything.