MarkPrep

Markdown to HTML

Convert Markdown to clean, standalone HTML in your browser.

Markdown
Preview

Paste Markdown and get GFM-correct HTML with a live preview. It runs in your browser, so nothing is uploaded, and you can download a self-contained .html file.

How to convert markdown to html

  1. 1Paste your Markdown on the left.
  2. 2See the rendered HTML preview update live.
  3. 3Download the .html or copy the source.
  4. 4Everything stays in your browser.

Format notes & gotchas

  • Output is body HTML; wrap it in your own template if you need a full page.
  • Raw HTML in your Markdown is passed through and sanitised in preview.

Related converters

Frequently asked questions

Is my file uploaded anywhere?+

No. Conversion runs entirely in your browser tab using WebAssembly. There is no upload endpoint — open your browser's Network tab and watch: nothing leaves the page. The only labelled exceptions are fetching a public URL and optional bring-your-own-key OCR.

How much does it cost?+

Conversion and the entire AI-Ready Pack — token counts, chunking, JSONL export — are free and unlimited, because they run on your hardware. Pro ($4/mo) adds workflow features like the local MCP server, watch folders and saved profiles.

Are the token counts accurate?+

Exact for OpenAI models (GPT-4o, o-series) via their published tokenizer. For Claude and Gemini we show a labelled approximation, because those tokenizers aren't public.

Want it inside your workflow?

Conversion is free forever. Pro ($4/mo) adds the local MCP server so Claude Code converts files on your machine, plus watch folders, saved profiles and encrypted sync.

See pricing