The Read Out Loud feature reads aloud the text in a PDF, including the text in comments and alternative text descriptions for images and fillable fields. In tagged PDFs, content is read in the order in which it appears in the document’s logical structure tree. In untagged documents, the reading order is inferred, unless a reading order has been specified in the Reading preferences.
Read Out Loud uses the available voices installed on your system. If you have SAPI 4 or SAPI 5 voices installed from text-to-speech or language applications, you can choose them to read your PDFs.
You must activate Read Out Loud before you can use it. You can deactivate Read Out Loud to free system resources and improve performance of other operations.
Choose View > Read Out Loud > Activate Read Out Loud or press Shift+Ctrl+Y (Windows) or Shift+Command+Y (Mac OS).
Choose View > Read Out Loud > Deactivate Read Out Loud or press Shift+Ctrl+Y (Windows) or Shift+Command+Y (Mac OS).
Choose View > Read Out Loud > Read This Page Only or press Shift+Ctrl+V (Windows) or Shift+Command+V (Mac OS).
Choose View > Read Out Loud > Read To End Of Document or press Shift+Ctrl+B (Windows) or Shift+Command+B (Mac OS).