iOS devices support a number of accessibility features not listed here. For more information, refer to the Apple support site. You can also check your accessibility settings by going to your device’s settings screen and tapping Accessibility.
You can use your device’s night shift feature to improve readability in low light conditions. Doing so reduces eye strain and extends battery life.
Set your display’s brightness to enhance readability as needed.
Devices on OS 11 and later include an option to invert colors.
Tap Settings > General (pre iOS 13).
Tap Display Accommodations.
Tap Invert Colors.
On iOS 13 and later:
Tap Display and Text Size.
Enable features such as:
You can also change the contrast, text size, and other display features from this screen.
For users of iOS 13+, the October, 2019 release supports dark mode. Dark mode’s high contrast display may improve readability in low light environments as well as extend battery life. For some users, dark mode is an important accessibility feature that maintains color meaning and preserves image representation.
The app supports VoiceOver, the iOS built-in screen reader. VoiceOver allows someone with a visual impairment to use simple gestures to hear PDF content. To enable VoiceOver:
The app supports the standard VoiceOver gestures as described in Apple’s documentation.