Step 6: Despeckle pages with noise

There is noise (unwanted dots or marks) on pages "3" and "5". In this step, you will remove the noise from these pages.
  1. Select pages "3" and "5" holding the Ctrl key.
  2. In the settings area on the right, click Clean Up.
    Clean Up panel
  3. In the Clean Up panel, click Despeckle.
    The Auto method is selected by default.
  4. Under Pages, select Selected valid pages.
  5. Under Strength, select Coarse.
  6. Click Apply.
    Despeckle panel
Reference: For more details about removing noise, see Removing Noise with Despeckle.