# Understanding font size options in Geckoboard

Learn about font size behavior in Geckoboard widgets.

Updated over 3 weeks ago

## **How font size works in Geckoboard**

Geckoboard automatically sizes fonts to optimize readability across different widget sizes. Font sizes cannot be manually adjusted.

## **Using the Text widget or Custom Widgets API**

If you're using the Text widget data source, [Markdown formatting is available](https://support.geckoboard.com/en/articles/6055637-display-formatted-text-using-the-text-widget) to create visual hierarchy with headings and other text styles.

If you're using the legacy Custom Widgets API, you can learn more about [HTML tags and attributes available](https://support.geckoboard.com/en/articles/9938169-supported-html-tags-and-attributes-for-legacy-text-widgets) to style or customize your text.