Any file dropped into _posts (or src/routes) can be a pure markdown file (with optional YAML front matter):

---
title: "My first post"
published: true
---

<script>
import Counter from '$lib/Counter.svelte';
</script>


Hello, from Svekyll.

<Counter/>

MDSvex converts your markdown into a Svelte component automatically. And, you can include Svelte components inside your markdown (in often surprising and powerful ways).

But, so, so much more. You have to read it to believe it!