> For the complete documentation index, see [llms.txt](https://docs.appfarm.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.appfarm.io/library/ui-components/drawable-canvas.md).

# Drawable canvas

Drawable Canvas allows you to draw by free-hand on a runtime only (newly created) file-data source. Very useful for e.g. signatures.

The "Value" property of the Drawable Canvas must be data-bound to a runtime only data source (file object class) with cardinality one. You must make sure the object in the data source has been populated.

The drawing will be saved back to this data source, as an image, and you may save it (persist).

{% hint style="info" %}
A full example setup of Drawable Canvas is available in our [Showroom](https://showroom.appfarm.app/ui-components/drawable-canvas)! You may view a demo, as well as access the setup in Appfarm Create. If you do not have access, you may register [here](https://showroom.appfarm.app/sign-up).
{% endhint %}


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