Which of the following elements is NOT typically part of a web form?

A web form is a structured document that allows users to input data and send it to a server for processing. This usually includes several interactive elements designed specifically for user input, such as submitting information or selecting preferences.

A submit button is essential because it triggers the action of sending the form data to the server once the user has completed their entries. Text fields provide space for users to type in information, making them fundamental for many kinds of data entry. Checkboxes enable users to make selections from a list of options, allowing for more interactive user experiences within the form.

In contrast, an image gallery is not a component of a web form. Image galleries serve to display images and are used in contexts where visual content and images need to be showcased, rather than as a means for users to submit data. Thus, including an image gallery in a web form would be out of context, making it the correct answer to which element is not typically part of a web form.