User Guide
Nitro PDF Pro MacOS

Sound/ Audio

Adding Sound/ Audio

  1. Click the down arrow next to Annotate
    button in the Toolbar to reveal the tools.
  2. Select the Sound tool
  3. Click on the page of your document. In the menu which appears either record a note or annotation by clicking the red record button, or select a file on your computer which you have previously recorded.

Once added, click on the sound/ audio annotation icon on the page to listen to the recording.

Note: Not all PDF apps support audio annotations. A PDF re-saved in an app without support for this feature will erase the annotations. This includes Preview in El Capitan and earlier.

Nitro PDF Pro for MacOS Editing PDFs