You need to activate Read Out Loud before using it. 

Please go to File > Preferences > Reading or Speech. For more information, please refer to Reading preferences and Speech preferences. 

Read Out Loud is a Text-to-Speech (TTS) tool. It reads the text in a PDF aloud, including the text in comments and alternate text descriptions for images, tables, and fillable fields. Text is read based on the order of the page content. With this feature, you can obtain information without viewing the pages, helping to effectively relief eyestrain. It also enables you to view other materials while listening to the content. 

Foxit PDF Editor offers preset visual modes that allow you to change the reading background with a single click, enhancing your reading experience by reducing eye strain and improving readability. To switch the visual modes, click View > Visual Mode, and select Default, Night, Eye Comfort, or Sepia background from the drop-down list as desired.

With Foxit Text Viewer, you can work on all PDF documents in pure text view mode. It allows you to easily reuse the texts scattered among images and tables, and acts like Notepad. Also, you can adjust some settings to meet your needs.

To Enter Text View mode, do one of the following:

• Choose View > Text Viewer.
• Press the shortcut key Ctrl + 6. 

Customizing Text Viewer 

To read documents in a backward order, please do one of the following:

• Choose View > Reverse View.
• Right-click on the document pane and choose Reverse View.

In Full Screen mode, Foxit PDF Editor Document Pane fills the entire screen, with the toolbar, Status bar, and Bookmarks pane hidden behind. The mouse pointer remains active in Full Screen mode so that you can click links. 

1. To set Full Screen preferences, please go to File > Preferences > Full Screen.

2. To enter Full Screen mode, please do one of the following:

User interface settings, such as the navigation pane, toolbar, and status bar, will be hidden when a PDF is displayed in Read Mode. The document pane is enlarged, reducing wasted reading space while leaving the ribbon tabs available for necessary operations.

To view a document in Read Mode, please choose one of the following: