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---
title: What is Markdoc?
---
# {% $markdoc.frontmatter.title %} {% #overview %}
Markdoc is a Markdown-based syntax and toolchain for creating custom documentation sites. Stripe created Markdoc to power [our public docs](http://stripe.com/docs).
{% callout type="check" %}
Markdoc is open-source—check out its [source](http://github.com/markdoc/markdoc) to see how it works.
{% /callout %}
## How is Markdoc different?
Markdoc uses a fully declarative approach to composition and flow control, where other solutions… [Read more](/docs/overview).
## Next steps
- [Install Markdoc](/docs/getting-started)
- [Explore the syntax](/docs/syntax)
{}"$$mdtype":"Node",
"errors":[],"lines":[],"inline":false,
"attributes": {},"frontmatter":"title: What is Markdoc?",
"children":[ ... 7 items ],"type":"document",
"annotations":[],
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---
title: Sandbox
---
{% sandbox height="calc(100vh - var(--nav-height))" /%}