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

# Testing a form in web mode

## How to test a form

The Buttons bar includes a "Test" menu button. Clicking on it opens an overlay with a preview of your form:

![Form Preview overlay](/files/qxr2zUtX7gi6H0bWd0Ex)

Here, many of your form's functions are available, including:

* entering data into fields
* running formulas
* showing the Wizard if it is configured
* running actions and services

You can also [test PDF production](/form-builder/advanced/pdf-test.md) from this overlay, using the "Test PDF" button.

The following is not available:

* reading data from the database
* saving data
* submitting data
* switching to the View mode and other page navigation

Using the "Close" button takes you back to Form Builder.

At the bottom, you have the [Formulas console](/form-builder/formulas/formulas-console.md), which shows automatically in case of errors with formulas.

## See also

* [Testing PDF production](/form-builder/advanced/pdf-test.md)
* [Testing in offline mode](/form-builder/advanced/offline-test.md)
* [The `open-rendered-format()` action](/form-runner/advanced/buttons-and-processes/actions-form-runner.md#open-rendered-format)