Use VoiceOver to navigate web pages using live regions on Mac
Web pages can contain areas, called “live regions”, whose content is updated without refreshing the entire page. VoiceOver can detect live regions, even when the focus is elsewhere on a web page, and speak the content in the live region as it changes.
Note: VO represents the VoiceOver modifier that you press with additional keys to enter VoiceOver commands. By default, you can press Control and Option together or just press Caps Lock.
Enable all live regions
Open VoiceOver Utility (press VO-Fn-F8 when VoiceOver is on).
Click the Web category, then select Enable Live Regions.
Enable a specific live region
If live regions are listed in the VoiceOver rotor when viewing web pages, you can enable a specific live region.
Use the VoiceOver rotor to move to a live region.
Press the O key to turn the live region on or off.
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