In Documents, you can use the Night or Sepia themes to please your eyes while reading at night or in a poorly-lit environment.
Select the view theme
- Open any PDF document.
- Tap the More ... icon in the upper right corner.
- Tap View Settings .
- Select Day (default), Night, or Sepia.
- Open any PDF document.
- Tap View Settings at the top right.
- Select Day (default), Night, or Sepia.