> For the complete documentation index, see [llms.txt](https://docs.umbraco.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.umbraco.com/umbraco-cms/extend-your-project/backoffice-extensions/icons.md).

# Icons

The icons in the Umbraco backoffice are based on [Lucide Icons](https://lucide.dev/) and [Simple Icons](https://simpleicons.org/). The syntax for using an icon starts with `icon-`. You can find the full list of available icons in the [All Icons article in the UI documentation](https://apidocs.umbraco.com/v17/ui/?path=/docs/umb-icons--docs).

## Example

```html
<umb-icon name="icon-umbraco" color="blue"></umb-icon>
```

## Adding custom icons

Umbraco allows you to add custom icons by [registering a new `icons` extension type](/umbraco-cms/extend-your-project/backoffice-extensions/extending-overview/extension-types/icons.md).


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