> For the complete documentation index, see [llms.txt](https://voyager-docs.devdojo.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://voyager-docs.devdojo.com/1.3/customization/tinymce.md).

# TinyMCE

If you want to customize TinyMCE within Voyager, you can do so by adding a [additional JS file](/1.3/customization/additional-css-js.md) to your config.

In this file you have to define a function like

```javascript
function tinymce_init_callback(editor)
{
    //...
}
```

If you need to manipulate TinyMCE **before** it was initialized, you can use

```javascript
function tinymce_setup_callback(editor)
{
    //...
}
```

Now you can control the TinyMCE instance(s) on the page. For all possible variables and functions, please refer to the [TinyMCE documentation](https://www.tinymce.com/docs/api/tinymce/tinymce.editor/).