Text Format is a feature in Drupal CMS that allows users to control the way text is displayed on a website. It is used to format text for readability, accessibility, and to ensure that the text is displayed correctly on different devices. Text Format is a type of content filter that is applied to text before it is displayed on a website. It can be used to add basic formatting such as bold, italic, and underline, as well as more advanced formatting such as tables, lists, and images. Text Format also allows users to control the size and color of text, as well as the font used. Text Format is an important feature in Drupal CMS as it allows users to create content that is both readable and accessible.