> ## Documentation Index
> Fetch the complete documentation index at: https://docs.surveyowl.co/llms.txt
> Use this file to discover all available pages before exploring further.

# Customize your form

> Choose a theme and make sure the form remains clear and readable.

Select the **Customize** icon in the builder header to open the **Design** panel. It lists the available themes, each with a small preview of its background, question text, answer style and button.

## Choose a theme

Select a theme to apply it to the current form. Changes appear in the builder immediately and are saved with the draft.

A good theme should:

* match the tone of your organization;
* keep question and answer text easy to read;
* make the primary button obvious;
* work on both small and large screens.

## Add branded content

Use an image block for a logo, cover image, or helpful illustration. Add alternative text when the image carries meaning. A welcome screen is often the cleanest place for a logo and short introduction.

## Preview contrast and spacing

Select **Preview** after changing the design. Check each question type you use, not only the first page. Pay particular attention to placeholder text, selected choices, error messages, and the end screen.

<Warning>
  **Design cannot repair unclear wording.** Use plain questions and short explanations first. Color and typography should support the task, not compete with it.
</Warning>


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