Built-in Shortcodes Demo

This post showcases the extensibility of our markdown engine using custom built-in shortcodes.

1. YouTube Embed

The youtube shortcode generates a privacy-conscious, lazy-loaded facade. It avoids loading heavy third-party tracking scripts until clicked. The thumbnail is fetched directly from YouTube's image CDN — no cookies, no tracking until you click play.

Rick Astley - Never Gonna Give You Up

2. Figure Embed

The figure shortcode simplifies image insertion with custom captions and alt attributes, formatted cleanly in HTML5 semantics.

Sample landscape photo
A random photo from Lorem Picsum — stable, no API key required

3. CodePen Embed

Embed fully interactive CodePen demonstrations directly within your posts. Replace user and id with your own CodePen username and pen ID.

4. GitHub Gist Embed

Embed clean, syntax-highlighted code from GitHub Gists. Use the username/gistId format for the id attribute.

Enjoy writing content with powerful built-in shortcodes!