zigmark

WASM zigmark — ms · marked.js — ms · speedup —×

# zigmark: Markdown at the Speed of Zig 🚀

> **A CommonMark + GFM-compliant Markdown parser, written in Zig, compiled to WebAssembly.**
>
> - 652/652 CommonMark spec tests passing ✅
> - 24/24 GFM extension tests passing ✅
> - Three renderers: HTML, AST, AI
> - Zero runtime dependencies
> - Blazing fast — often faster than JS!
>
> _Edit this pane and watch the preview update in real-time. Switch renderers on the right!_

---

## Headings

# H1 Heading
## H2 Heading
### H3 Heading
#### H4 Heading
##### H5 Heading
###### H6 Heading

---

## Lists

- Unordered item 1
- Unordered item 2
  - Nested item
    - Deeply nested

1. Ordered item 1
2. Ordered item 2
   1. Sub-item
   2. Sub-item

---

## Emphasis & Inline

*Italic* _Italic_ **Bold** __Bold__ ***Bold Italic***
~~Strikethrough~~ `Inline code`

---

## Links & Images

[zigmark on GitHub](https://github.com/sc2in/zigmark)
![Zig logo](https://ziglang.org/img/zig-logo-dark.svg)

---

## Blockquotes

> This is a blockquote.
> > Nested blockquote!

---

## Code Blocks

```zig
const zigmark = @import("zigmark");
var doc = try parser.parseMarkdown(allocator, input);
const html = try zigmark.HTMLRenderer.render(allocator, doc);
```

---

## Frontmatter (YAML & TOML)

```yaml
title: Zigmark Demo
author: Your Name
```

```toml
tags = ["zig", "markdown", "wasm"]
```

---

## Footnotes

```markdown
Here is a footnote reference[^1].

[^1]: This is the footnote content.
```

## GFM Extensions

### Tables

| Name    | Role      | Score |
| ------- | --------- | ----: |
| Alice   | Engineer  |    42 |
| Bob     | Designer  |    37 |
| Charlie | Manager   |    51 |

Alignment: left (`:---`), center (`:---:`), right (`---:`).

| Left    | Center  |  Right |
| :------ | :-----: | -----: |
| apples  | bananas | 1.0000 |
| oranges |  grapes | 0.5000 |

### Task Lists

- [x] Implement CommonMark parser
- [x] Add GFM extensions
- [ ] World domination

### Autolinks

Bare URLs and emails are linked automatically:

Visit www.example.com or https://ziglang.org or email contact@sc2.in

---

## Raw HTML

```html
<div style="padding:8px;border:1px solid #58a6ff;border-radius:6px;">
  Raw HTML block! <b>Bold</b> <i>Italic</i>
</div>
```

## Spec Compliance

All <b>652/652</b> CommonMark tests pass and all <b>24/24</b> GFM extension tests pass.
See the <a href="https://github.com/sc2in/zigmark">README</a> for a full breakdown.

---

## About

zigmark is a Markdown parser and renderer written in Zig, designed for speed, correctness, 
and embeddability. It supports HTML, AST, and AI-friendly output modes.

Try switching renderers!

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*Edit this pane and watch the preview update in real-time. Use the dropdown to switch output renderers!*

Renderer: