> For the complete documentation index, see [llms.txt](https://docs.gutenbricks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.gutenbricks.com/client-experience/custom-block-preview.md).

# Custom Block Preview

{% embed url="<https://www.youtube.com/watch?v=CdSoOHPJ_ww>" %}