> For the complete documentation index, see [llms.txt](https://docs.feathery.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.feathery.io/develop/react/api-guide/form/initialloader.md).

# initialLoader

Options for a loader while your form initializes

### Overview

`initialLoader` allows you to configure a loader to show as your Feathery form first loads for your user.

### Example <a href="#usage" id="usage"></a>

```typescript
import { useRef } from 'react';
import { init, Form, FormContext } from '@feathery/react';
// You can use the default loader, or specify your own
import CustomLoader from './CustomLoader';

function App() {
  // Initialize Feathery
  init('SDKKey', 'support@feathery.io');

  // Show the `aBcDeF` Feathery form
  return <Form
    formId='aBcDeF'
    // Fetch the Feathery form context
    initialLoader={{
      show: true,
      loader: <CustomLoader />
    }}
  />
}
```

### initialLoader properties

Options for the loader as the form initializes. By default no loader will be shown while loading the form, unless the user is waiting on authentication.&#x20;

<table><thead><tr><th width="168.33333333333331">Prop</th><th>Type</th><th>Description</th></tr></thead><tbody><tr><td><code>show</code></td><td><code>optional boolean</code></td><td>By default no loader will be shown while loading the form, unless the user is waiting on authentication. If this is explicitly false then no loader will be shown in both cases. If true, loader will be shown for both cases.</td></tr><tr><td><code>loader</code></td><td><code>optional string | JSX</code></td><td>Defaults to a simple grey spinner. If using React SDK, accepts a JSX component. If using Javascript SDK, accepts a string of HTML, i.e. <code>&#x3C;div class="loader" /></code>, that can be styled with your own CSS.</td></tr><tr><td><code>initialContainerHeight</code></td><td><code>optional string</code></td><td>Defaults to <code>min-content</code>. This can be any CSS measurement value, i.e. <code>100vw</code>, <code>300px</code>, or <code>max-content</code>.</td></tr><tr><td><code>initialContainerWidth</code></td><td><code>optional string</code></td><td>Defaults to <code>100%</code>. This can be any CSS measurement value, i.e. <code>100vw</code>, <code>300px</code>, or <code>max-content</code>.</td></tr></tbody></table>


---

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