> For the complete documentation index, see [llms.txt](https://docs.apryse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.apryse.com/web/get-started/samples/form-builder.md).

# Form Builder - add fields

Add fillable form fields to a PDF, DOCX, XLSX, PPTX or scanned image in a web browser using JavaScript (no servers or other external dependencies required)

With this JavaScript sample, add fillable form fields to a PDF directly in the web browser (no servers or other external dependencies required). Fields are first added as annotations and then converted to interactive form fields. You can also use this sample for a DOCX, XLSX, PPTX or scanned image (files are converted to PDF in the browser where modifications are saved into the PDF file). Too see a live demonstration watch our video demo: [Converting Scanned PDF to Fillable Form](https://www.youtube.com/watch?v=_C5wjkBLo60) or learn about our [Web SDK](/web/get-started/guides.md).

{% tabs %}
{% tab title="JavaScript" %}
{% code lineNumbers="true" %}

```js
// eslint-disable-next-line no-undef
const WebViewerConstructor = isWebComponent() ? WebViewer.WebComponent : WebViewer;

WebViewerConstructor(
  {
    path: '../../../lib',
    initialDoc: '../../full-apis/TestFiles/contract.pdf',
  },
  document.getElementById('viewer')
).then(instance => {
  samplesSetup(instance);

  instance.UI.setToolbarGroup('toolbarGroup-Forms');
});
```

{% endcode %}
{% endtab %}
{% endtabs %}


---

# Agent Instructions
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## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.apryse.com/web/get-started/samples/form-builder.md?ask=<question>&goal=<endgoal>
```

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