The selection of a preferred application for opening Portable Document Format (PDF) files on the Android operating system determines which program automatically handles these files. For instance, if multiple PDF reader applications are installed, one can be designated as the default. Subsequently, tapping a PDF file link or opening a PDF from file storage will launch the designated application automatically.
The capacity to specify the application that handles PDF files enhances user experience by streamlining workflow and promoting efficiency. Users are not required to manually select an application each time they open a PDF. Historically, Android systems have provided mechanisms for setting and modifying default applications, affording users a degree of control over their digital environment.