The automatic scrolling feature makes it easier to scan through long PDFs, especially reflowed documents. You can scroll through pages without using keystrokes or mouse actions.
To change the scrolling speed to a specific speed, press a number key (9 for fastest, 0 for slowest).
To increase or decrease the scrolling speed, press the Up Arrow or Down Arrow key, depending on the direction of scrolling.
To reverse the direction of scrolling, press the minus sign (-) key.
To jump to the next or previous page, press the Left Arrow or Right Arrow key.
You can navigate by using the keyboard instead of the mouse. Several keyboard access features are available on Mac OS; see the documentation for your operating system for details. On Windows, some of the keyboard shortcuts used to navigate in Reader may differ from those used in other Windows applications.
When you open Reader within a web browser, keyboard commands are mapped to the web browser first. Consequently, some keyboard shortcuts may not be available for Reader or may be available only after you shift the focus to the PDF.
For information on accessibility features for navigating Reader and PDF documents with the keyboard, visit the accessibility page of the Adobe website.