Testing aria hidden

Software used for testing:

• Windows 10
• Chrome 81
• Edge 81
• Firefox 76
• Internet Explorer 11
• Safari ?
• JAWS 2019
• NVDA 2019.3.1
• VoiceOver on iOS ? (iPad ?)
• VoiceOver on macOS ?
• ChromeVox on Chrome OS ?
• Talkback on Android ?, Chrome ?
• Orca ? Epiphany ?/ Webkit ?
• Orca ? on Firefox ?/Ubuntu ?
• Talkback ? on Android ?/Firefox ?
• Talkback ? on Android ?/Firefox ?

Test cases:

https://carmacleod.github.io/playground/aria-hidden-tests.html

Results:

screen reader support for various methods of hiding content

test	JAWS + Chrome	JAWS + Edge	JAWS + Firefox	JAWS + IE	NVDA + Chrome	NVDA + Edge	NVDA + Firefox	NVDA + IE	VoiceOver macOS + Safari	VoiceOver iOS + Safari	ChromeVox + Chrome OS	Orca + Epiphany Webkit	Orca + Firefox Ubuntu	Talkback + Android Chrome	Talkback + Android Firefox
1. aria-hidden=true	ignored	ignored	ignored	ignored	ignored	ignored	ignored	ignored	?	?	?	?	?	?	?
2. html hidden	ignored	ignored	ignored	ignored	ignored	ignored	ignored	ignored	?	?	?	?	?	?	?
3. CSS display:none	ignored	ignored	ignored	ignored	ignored	ignored	ignored	ignored	?	?	?	?	?	?	?
4. CSS visibility:hidden	ignored	ignored	ignored	ignored	ignored	ignored	ignored	ignored	?	?	?	?	?	?	?
5. CSS off screen	read	read	read	read	read	read	read	read	?	?	?	?	?	?	?
6. CSS off screen aria-hidden=true	ignored	ignored	ignored	ignored	ignored	ignored	ignored	ignored	?	?	?	?	?	?	?
7. HTML hidden aria-hidden=false	ignored	ignored	ignored	read	ignored	ignored	ignored	ignored	?	?	?	?	?	?	?
8. CSS display:none aria-hidden=false	ignored	ignored	ignored	read	ignored	ignored	ignored	ignored	?	?	?	?	?	?	?
9. CSS visibility:hidden aria-hidden=false	ignored	ignored	ignored	read	ignored	ignored	ignored	ignored	?	?	?	?	?	?	?
10. HTML hidden aria-hidden=false on child element	ignored	ignored	ignored	ignored	ignored	ignored	ignored	ignored	?	?	?	?	?	?	?
11. aria-hidden=true with aria-hidden=false on child element	ignored	ignored	ignored	ignored	ignored	ignored	ignored	ignored	?	?	?	?	?	?	?