Accessibility

Android devices support a number of accessibility features not listed here. For more information, refer to the Android Accessibility Overview. You can also check your accessibility settings by going to your device’s settings screen and tapping Accessibility (or search for it if the menu item does not display).

Visual features

Text display size

Android allows you to specify a preferred text size. Acrobat’s support for font sizes means that its user interface will automatically scale fonts according to your settings. To increase or decrease Acrobat’s font size:

  1. Go to your device’s settings screen.

  2. Tap Accessibility (or search for it if the menu item does not display).

  3. Tap Display > Font Size.

  4. Adjust the slider to your preferred setting.

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Inverting colors

Your device settings include an option to invert colors.

  1. Go to your device’s settings screen.

  2. Tap Accessibility (or search for it if the menu item does not display).

  3. Tap Color inversion.

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Night mode

Night Mode adjusts your display brightness to improve readability in low light conditions. Night mode also reduces eye strain and extends your battery life:

  1. Go to your device’s settings screen.

  2. Tap Display > Night Mode.

  3. Enable Night Mode.

  4. Move the Effect Strength slider to adjust how much Night Mode changes your display.

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Acrobat’s night mode

Acrobat’s Night Mode inverts black and white in low light conditions to enhance contrast, reduce eye strain, and extend your battery life.

To set the view mode:

  1. Tap anywhere in the PDF to show the tool bars if they are hidden.

  2. Tap the view mode icon. The displayed icon represents the current view.

  3. Tap one Night Mode.

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Display brightness

Set your display’s brightness to enhance readability as needed.

  1. Go to your device’s settings screen.

  2. Tap Display.

  3. Disable or enable Adaptive brightness.

  4. Move the brightness slider to your preferred level.

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Audio features

Talkback

Acrobat supports Talkback, the Android built-in screen reader. If this feature is available on your device:

  1. Go to your device’s settings screen.
  2. Tap Accessibility (or search for it if the menu item does not display).
  3. Tap Talkback.
  4. Enable the feature.

Other text-to-speech readers

Your device may provide other screen readers or text-to-speech features. You may have to open your settings app and search for your device’s audio features.

Here’s an example from one device:

  1. Go to your device’s settings screen.

  2. Tap Accessibility (or search for it if the menu item does not display).

  3. Tap Text-to-Speech Output.

  4. Configure the setting as need. For example, you may be able to select a preferred text-to-speech engine, the language, speech rate, and pitch.

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Gesture features

The app supports the standard TalkBack gestures as described in Google’s documentation.

Keyboard shortcuts

Shortcuts are currently only available on Chromebook devices.

Page and file navigation shortcuts

Feature Shortcut
Scroll up Up Arrow
Scroll down Down Arrow
First Page Shift + CTRL + Up Arrow
Last Page Shift + CTRL + Down Arrow
Scroll Spacebar
Zoom in CTRL + equal sign
Zoom out CTRL + hypen
Undo CTRL + Z
Redo CTRL + Shift + Z
Search CTRL + F
Copy Ctrl + C
Paste Ctrl + V

Commenting shortcuts

While the multi-key shortcuts work by default, you must manually enable the single-key shortcuts. To enable single-key shortcuts on Chromebook, go to your device settings and enable Enable Hotkeys.

Feature Shortcut
Sticky Note Tool S
Text Edits Tool E
Highlighting Tool U
Cycle through text markup tools: Highlight, Underline, Cross Out Shift + U
Sdrawing markup tool D
Commit the text markup/freeform Enter
Add bookmark for current visible PDF page CTRL + D
Open/close Right Hand Pane Ctrl + Shift + B

Home screen shortcuts

Feature Shortcut
Scroll up the file list Up Arrow
Scroll down the file list Down Arrow
Open any file or folder Enter
Switch Home Screen tabs Ctrl + tab / Ctrl + @gt;respective tab number@lt;

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