# 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](https://4129616727-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LEkBiSDvlXs3VWiO0Zu%2Fuploads%2Fgit-blob-c8c987a75b0acf291591d7997b5976295e812dc0%2Fweb-test.png?alt=media)

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](https://doc.orbeon.com/form-builder/advanced/pdf-test) 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](https://doc.orbeon.com/form-builder/formulas/formulas-console), which shows automatically in case of errors with formulas.

## See also

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