PowerMapper
PowerMapper
img with null alt and non-null aria-labelledby attributes
Screen reader compatibility
ARIA HTML
Sep 11, 2022
Expected Result: causes problems in some screen readers
Actual Result: causes problems in 59 screen reader / browser combinations
For expected failures, the results show which AT combos the failures affect. Results are recorded from the user's viewpoint, so describe the user impact of authoring errors.
Author intent is unclear in this markup since ALT='' marks image as presentational, but aria-labelledby gives it an accessible name.
Code used for this test:
<img src='1234.png' alt='' aria-labelledby='img-null-alt-aria-labelledby-id'>
<p id='img-null-alt-aria-labelledby-id'>This is the aria-labelledby</p>
Change History
Last updated: September 11, 2022
- NVDA with Chrome
Causes problems from
NVDA 2018.4 to NVDA 2022.2
- NVDA with IE
Causes problems from
NVDA 2015.2 to NVDA 2019.2
- NVDA with FF
Causes problems from
NVDA 2015.2 to NVDA 2022.2
- JAWS with Chrome
Causes problems from
JAWS 2018.1811.2 to JAWS 2022.2207.25
- JAWS with IE
Causes problems from
JAWS 16.0.4350 to JAWS 2019.1912.1
- JAWS with FF
Causes problems from
JAWS 16.0.4350 to JAWS 2022.2207.25
- VoiceOver macOS
Causes problems from
VoiceOver macOS 10.10 to VoiceOver macOS 12.5
- VoiceOver iOS
Causes problems from
VoiceOver iOS 9.2 to VoiceOver iOS 15.6
- WindowEyes with IE
Causes problems in
WindowEyes 9.2
- Dolphin with IE
Causes problems in
Dolphin SR 15.05
| Screen reader | Browser | Mode | Notes | What the user hears |
|---|---|---|---|---|
| NVDA 2022.2 | Chrome 105 | Reading | Image not ignored, and aria label read | Graphic, this is the aria-labelledby |
| NVDA 2022.2 | FF102 | Reading | Image not ignored, and aria label read | Graphic, this is the aria-labelledby |
| NVDA 2022.2 | Edge 105 | Reading | Image not ignored, and aria label read | Graphic, this is the aria-labelledby |
| NVDA 2021.2 | Chrome 94 | Reading | Image not ignored, and aria label read | Graphic, this is the aria-labelledby |
| NVDA 2021.2 | FF91 | Reading | Image not ignored, and aria label read | Graphic, this is the aria-labelledby |
| NVDA 2021.2 | Edge 94 | Reading | Image not ignored, and aria label read | Graphic, this is the aria-labelledby |
| NVDA 2020.2 | Chrome 86 | Reading | Image not ignored, and aria label read | Graphic, this is the aria-labelledby |
| NVDA 2020.2 | FF78 | Reading | Image not ignored, and aria label read | Graphic, this is the aria-labelledby |
| NVDA 2020.2 | Edge 92 | Reading | Image not ignored, and aria label read | Graphic, this is the aria-labelledby |
| NVDA 2019.2 | Chrome 79 | Reading | Image not ignored, and aria label read | Graphic, this is the aria-labelledby |
| NVDA 2019.2 | FF68 | Reading | Image not ignored, and aria label read | Graphic, this is the aria-labelledby |
| NVDA 2019.2 | IE11 | Reading | Image ignored, and aria label read | This is the aria-labelledby |
| NVDA 2018.4 | Chrome 73 | Reading | Image not ignored, and aria label read | Graphic, this is the aria-labelledby |
| NVDA 2018.4 | FF60 | Reading | Image not ignored, and aria label read | Graphic, this is the aria-labelledby |
| NVDA 2018.4 | IE11 | Reading | Image ignored, and aria label read | This is the aria-labelledby |
| NVDA 2017.3 | FF60 | Reading | Image not ignored, and aria label read | Graphic, this is the aria-labelledby |
| NVDA 2017.3 | IE11 | Reading | Image ignored, and aria label read | This is the aria-labelledby |
| NVDA 2016.2 | FF48 | Reading | Image not ignored, and aria label read | Graphic, this is the aria-labelledby |
| NVDA 2016.2 | IE11 | Reading | Image ignored, and aria label read | This is the aria-labelledby |
| NVDA 2015.2 | FF48 | Reading | Image not ignored, and aria label read | Graphic, this is the aria-labelledby |
| NVDA 2015.2 | IE11 | Reading | Image not ignored, and aria label read | Graphic, this is the aria-labelledby |
| JAWS 2022.2207.25 | Chrome 105 | Reading | Image ignored, and aria labelled by read if visible | This is the aria-labelledby |
| JAWS 2022.2207.25 | FF102 | Reading | Image not ignored, and aria label read | This is the aria-labelled, graphic |
| JAWS 2022.2207.25 | Edge 105 | Reading | Image ignored, and aria labelled by read if visible | This is the aria-labelledby |
| JAWS 2021.2107.12 | Chrome 94 | Reading | Image ignored, and aria labelled by read if visible | This is the aria-labelledby |
| JAWS 2021.2107.12 | FF91 | Reading | Image not ignored, and aria label read | This is the aria-labelled, graphic |
| JAWS 2021.2107.12 | Edge 94 | Reading | Image ignored, and aria labelled by read if visible | This is the aria-labelledby |
| JAWS 2020.2008.24 | Chrome 86 | Reading | Image ignored, and aria labelled by read if visible | This is the aria-labelledby |
| JAWS 2020.2008.24 | FF78 | Reading | Image not ignored, and aria label read | This is the aria-labelled, graphic |
| JAWS 2020.2008.24 | Edge 92 | Reading | Image ignored, and aria labelled by read if visible | This is the aria-labelledby |
| JAWS 2019.1912.1 | Chrome 79 | Reading | Image ignored, and aria labelled by read if visible | This is the aria-labelledby |
| JAWS 2019.1912.1 | FF68 | Reading | Image not ignored, and aria label read | This is the aria-labelled, graphic |
| JAWS 2019.1912.1 | IE11 | Reading | Image ignored, and aria labelled by read if visible | This is the aria-labelledby |
| JAWS 2018.1811.2 | Chrome 73 | Reading | Image ignored, and aria labelled by read if visible | This is the aria-labelledby |
| JAWS 2018.1811.2 | FF60 | Reading | Image not ignored, and aria label read | Graphic, this is the aria-labelledby |
| JAWS 2018.1811.2 | IE11 | Reading | Image ignored, and aria labelled by read if visible | This is the aria-labelledby |
| JAWS 18.0.5038 | FF52 | Reading | Image ignored, and aria labelled by read if visible | This is the aria-labelledby |
| JAWS 18.0.5038 | IE11 | Reading | Image ignored, and aria labelled by read if visible | This is the aria-labelledby |
| JAWS 17.0.2619 | FF48 | Reading | Image ignored, and aria labelled by read if visible | This is the aria-labelledby |
| JAWS 17.0.2619 | IE11 | Reading | Image ignored, and aria labelled by read if visible | This is the aria-labelledby |
| JAWS 16.0.4350 | FF42 | Reading | Image ignored, and aria labelled by read if visible | This is the aria-labelledby |
| JAWS 16.0.4350 | IE11 | Reading | Image ignored, and aria labelled by read if visible | This is the aria-labelledby |
| WindowEyes 9.2 | IE11 | Reading | Image not ignored, and aria label read | This is the aria-labelledby |
| VoiceOver macOS 12.5 | Safari 15.6 | Reading | Image ignored, aria labelled by not read | |
| VoiceOver macOS 11.5 | Safari 15.0 | Reading | Image ignored, aria labelled by not read | |
| VoiceOver macOS 10.15 | Safari 14.1 | Reading | Image ignored, aria labelled by not read | |
| VoiceOver macOS 10.14 | Safari 13.0 | Reading | Image not ignored, and aria label read | This is the aria-labelled by, image |
| VoiceOver macOS 10.13 | Safari 12.1 | Reading | Image not ignored, and aria label read | This is the aria-labelled by, image |
| VoiceOver macOS 10.12 | Safari 10.1.2 | Reading | Image not ignored, and aria label read | This is the aria-labelled by, image |
| VoiceOver macOS 10.11 | Safari 9.1.2 | Reading | Image not ignored, and aria label read | This is the aria-labelled by, image |
| VoiceOver macOS 10.10 | Safari 9.0.2 | Reading | Image not ignored, and aria label read | This is the aria-labelled by, image |
| VoiceOver iOS 15.6 | Safari iOS 15.6 | Touch | Image ignored, aria labelled by not read | |
| VoiceOver iOS 14.7 | Safari iOS 14.7 | Touch | Image ignored, aria labelled by not read | |
| VoiceOver iOS 13.3 | Safari iOS 13.3 | Touch | Image not ignored, and aria label read | This is the aria-labelled by, image |
| VoiceOver iOS 12.4 | Safari iOS 12.4 | Touch | Image not ignored, and aria label read | This is the aria-labelled by, image |
| VoiceOver iOS 11.4 | Safari iOS 11.4 | Touch | Image not ignored, and aria label read | This is the aria-labelled by, image |
| VoiceOver iOS 10.3 | Safari iOS 10.3 | Touch | Image not ignored, and aria label read | This is the aria-labelled by, image |
| VoiceOver iOS 9.2 | Safari iOS 9.2 | Touch | Image not ignored, and aria label read | This is the aria-labelled by, image |
| Dolphin SR 15.05 | IE11 | Reading | Image ignored, and aria labelled by read if visible |
SortSite rules: AccNullAltWithAccName
Test notes
All tests were carried out with screen reader factory settings. JAWS in particular has a wide variety of settings controlling exactly what gets spoken.
Screen readers allow users to interact in different modes, and can produce very different results in each mode. The modes used in these tests are:
- Reading Content read using the “read next” command in a screen reader
- Tabbing Content read using the “tab” key in a screen reader
- Heading Content read using the “next heading” key in a screen reader
- Touch Content read when touching an area of screen on a mobile device
In the “What the user hears” column:
- Commas represent short pauses in screen reader voicing
- Full Stops represent places where voicing stops, and the “read next” or “tab” or “next heading” command is pressed again
- Ellipsis … represent a long pause in voicing
- (Brackets) represent voicing that requires a keystroke to hear