General, Web category, VoiceOver Utility on Mac
Use the General pane of the Web category in VoiceOver Utility to specify what happens when a webpage opens.
To open VoiceOver Utility, press Command-F5 to turn VoiceOver on, then press VO-F8.
Note: VO represents the VoiceOver modifier.
Speak webpage summary
When a webpage opens, have VoiceOver speak a summary of the items on the page. The summary is based on the items selected in the Web Rotor pane of the Web category in VoiceOver Utility.
For example, if the VoiceOver rotor includes headers, links, auto web spots, and form controls, the webpage summary that VoiceOver speaks might sound like “The Apple - Accessibility page has 14 headers 52 links 8 auto web spots 1 form control.”
Automatically speak the webpage
When a webpage opens, have VoiceOver start reading the page. If you set a sweet spot on the page, VoiceOver starts reading from the sweet spot; otherwise, it starts reading from the beginning of the page.
While a webpage loads
Click the pop-up menu, then choose what you want to hear while a webpage is being displayed: Speak Progress, Play Tone, or Do Nothing.
By default, VoiceOver speaks the percentage of the webpage that is loaded.