PowerMapper
PowerMapper
object with aria-labelledby attribute
Screen reader compatibility
ARIA HTML WCAG
Dec 12, 2023
Expected Result: works in a screen reader
Actual Result: causes problems in 39 screen reader / browser combinations
Browsers stopped displaying Flash content when Flash reached end-of-life in December 2020.
Note: The ARIA Text Alternative Computation allows objects to be labelled by items hidden by CSS
WCAG Technique: ARIA10: Using aria-labelledby to provide a text alternative for non-text content
Code used for this test:
<object aria-labelledby='object-aria-labelledby-id' data='startstop_movieclips.swf' type='application/x-shockwave-flash'>
</object>
<p id='object-aria-labelledby-id' style='display:none'>This is ARIA-LABELLEDBY text</p>
Reliability Trend
This graph shows reliability over time for this code in NVDA, JAWS and Voiceover. Other screen readers don't have enough historical data yet to plot trends.
Change History
Last updated: December 12, 2023
- NVDA with Chrome
Stable - OK from
NVDA 2018.4 to NVDA 2023.3
- NVDA with IE
Causes problems from
NVDA 2015.2 to NVDA 2019.2
NVDA with FF
Better - caused problems in
NVDA 2019.2,
but now OK in NVDA 2023.3- JAWS with Chrome
Stable - OK from
JAWS 2018.1811.2 to JAWS 2023.2311.34
- JAWS with IE
Causes problems from
JAWS 14.0.9002 to JAWS 2019.1912.1
- JAWS with FF
Better - caused problems in
JAWS 2019.1912.1,
but now OK in JAWS 2023.2311.34
- VoiceOver macOS
Better - caused problems in
VoiceOver macOS 10.14,
but now OK in VoiceOver macOS 13.6
- VoiceOver iOS
Better - caused problems in
VoiceOver iOS 14.7,
but now OK in VoiceOver iOS 16.6
- WindowEyes with IE
Causes problems from
WindowEyes 8.4 to WindowEyes 9.2
- Dolphin with IE
Causes problems in
Dolphin SR 15.05
| Screen reader | Browser | Mode | Notes | What the user hears |
|---|---|---|---|---|
| NVDA 2023.3 | Chrome 120 | Reading | Screen says 'Adobe Flash Player is no longer supported' | Embedded object unavailable, this is ARIA-LABELLEDBY text. |
| NVDA 2023.3 | FF 115 | Reading | Nothing displayed on screen and nothing voiced for object | |
| NVDA 2023.3 | Edge 120 | Reading | Screen says 'This plug-in isn't supported' | Embedded object unavailable, this is ARIA-LABELLEDBY text. |
| NVDA 2022.2 | Chrome 105 | Reading | Screen says 'Adobe Flash Player is no longer supported' | Embedded object unavailable, this is ARIA-LABELLEDBY text. |
| NVDA 2022.2 | FF 102 | Reading | Nothing displayed on screen and nothing voiced for object | |
| NVDA 2022.2 | Edge 105 | Reading | Screen says 'This plug-in isn't supported' | Embedded object unavailable, this is ARIA-LABELLEDBY text. |
| NVDA 2021.2 | Chrome 94 | Reading | Screen says 'This plug-in isn't supported' | Embedded object unavailable, this is ARIA-LABELLEDBY text. |
| NVDA 2021.2 | FF 91 | Reading | Nothing displayed on screen and nothing voiced for object | |
| NVDA 2021.2 | Edge 94 | Reading | Screen says 'This plug-in isn't supported' | Embedded object unavailable, this is ARIA-LABELLEDBY text. |
| NVDA 2020.2 | Chrome 86 | Reading | Screen says 'This plug-in isn't supported' | Embedded object unavailable, this is ARIA-LABELLEDBY text. |
| NVDA 2020.2 | FF 78 | Reading | Nothing displayed on screen and nothing voiced for object | |
| NVDA 2020.2 | Edge 92 | Reading | Screen says 'This plug-in isn't supported' | Embedded object unavailable, this is ARIA-LABELLEDBY text. |
| NVDA 2019.2 | Chrome 79 | Reading | Flash is disabled in Chrome 76 and will be removed in Chrome 87. | Embedded object, this is ARIA-LABELLEDBY text. |
| NVDA 2019.2 | FF 68 | Reading | ARIA description read, but unlabeled buttons. | This is ARIA-LABELLEDBY text. Clickable button. Button, hide plugin. Blank. |
| NVDA 2019.2 | IE11 | Reading | No description of non-text content | Embedded object |
| NVDA 2018.4 | Chrome 73 | Reading | Flash is disabled in Chrome 76 and will be removed in Chrome 87. | Embedded object, this is ARIA-LABELLEDBY text. |
| NVDA 2018.4 | FF 60 | Reading | Unlabeled buttons, and no description of non-text content. | Clickable button. Button, hide plugin. Blank. |
| NVDA 2018.4 | IE11 | Reading | No description of non-text content | Embedded object |
| NVDA 2017.3 | FF 60 | Reading | ARIA label is announced - but no way to interact with object | Embedded object unavailable - This is ARIA-LABELLEDBY text |
| NVDA 2017.3 | IE11 | Reading | No description of non-text content | Embedded object |
| NVDA 2016.2 | FF 48 | Reading | Nothing voiced for object - no indication it exists | |
| NVDA 2016.2 | IE11 | Reading | No description of non-text content | Embedded object |
| NVDA 2015.2 | FF 41 | Reading | No description of non-text content | Button. A plugin is needed to display this content. Button, hide plugin. |
| NVDA 2015.2 | IE11 | Reading | Voices URL of page | Embedded object, tests slash SR media dot HTML |
| JAWS 2023.2311.34 | Chrome 120 | Reading | This is ARIA-LABELLEDBY text, graphic unavailable. | |
| JAWS 2023.2311.34 | FF 115 | Reading | This is ARIA-LABELLEDBY text. | |
| JAWS 2023.2311.34 | Edge 120 | Reading | This is ARIA-LABELLEDBY text, graphic unavailable. | |
| JAWS 2022.2207.25 | Chrome 105 | Reading | This is ARIA-LABELLEDBY text, graphic unavailable. | |
| JAWS 2022.2207.25 | FF 102 | Reading | This is ARIA-LABELLEDBY text. | |
| JAWS 2022.2207.25 | Edge 105 | Reading | This is ARIA-LABELLEDBY text, graphic unavailable. | |
| JAWS 2021.2107.12 | Chrome 94 | Reading | This is ARIA-LABELLEDBY text, graphic unavailable. | |
| JAWS 2021.2107.12 | FF 91 | Reading | This is ARIA-LABELLEDBY text. | |
| JAWS 2021.2107.12 | Edge 94 | Reading | This is ARIA-LABELLEDBY text, graphic unavailable. | |
| JAWS 2020.2008.24 | Chrome 86 | Reading | This is ARIA-LABELLEDBY text, graphic unavailable. | |
| JAWS 2020.2008.24 | FF 78 | Reading | This is ARIA-LABELLEDBY text. | |
| JAWS 2020.2008.24 | Edge 92 | Reading | This is ARIA-LABELLEDBY text, graphic unavailable. | |
| JAWS 2019.1912.1 | Chrome 79 | Reading | This is ARIA-LABELLEDBY text, graphic. | |
| JAWS 2019.1912.1 | FF 68 | Reading | Unlabeled buttons, and no description of non-text content. | Unlabeled zero button. Hide plugin button. |
| JAWS 2019.1912.1 | IE11 | Reading | No description of non-text content | Start button. Stop button. |
| JAWS 2018.1811.2 | Chrome 73 | Reading | Graphic, this is ARIA-LABELLEDBY text. | |
| JAWS 2018.1811.2 | FF 60 | Reading | Unlabeled buttons, and no description of non-text content. | Unlabeled zero button. Hide plugin button. |
| JAWS 2018.1811.2 | IE11 | Reading | No description of non-text content | Start button. Stop button. |
| JAWS 18.0.5038 | FF 52 | Reading | Nothing voiced for object - no indication it exists | |
| JAWS 18.0.5038 | IE11 | Reading | No description of non-text content | Flash start. Start button. Stop button. Flash end. |
| JAWS 17.0.2619 | FF 48 | Reading | Nothing voiced for object - no indication it exists | |
| JAWS 17.0.2619 | IE11 | Reading | No description of non-text content | Flash start. Start button. Stop button. Flash end. |
| JAWS 16.0.4350 | FF 41 | Reading | Nothing voiced for object - no indication it exists | |
| JAWS 16.0.4350 | IE11 | Reading | No description of non-text content | Flash start. Start button. Stop button. Flash end. |
| JAWS 15.0.9023 | FF 41 | Reading | Nothing voiced for object - no indication it exists | |
| JAWS 15.0.9023 | IE11 | Reading | No description of non-text content | Flash start. Start button. Stop button. Flash end. |
| JAWS 14.0.9002 | FF 41 | Reading | Nothing voiced for object - no indication it exists | |
| JAWS 14.0.9002 | IE11 | Reading | No description of non-text content | Flash start. Start button. Stop button. Flash end. |
| WindowEyes 9.2 | IE11 | Reading | Nothing voiced for object - no indication it exists | |
| WindowEyes 8.4 | IE11 | Reading | No description of non-text content | Start button. Start button. Button. |
| VoiceOver macOS 13.6 | Safari 16.6 | Reading | Nothing displayed on screen and nothing voiced for object | |
| VoiceOver macOS 12.5 | Safari 15.6 | Reading | Nothing displayed on screen and nothing voiced for object | |
| VoiceOver macOS 11.5 | Safari 15.0 | Reading | Nothing displayed on screen and nothing voiced for object | |
| VoiceOver macOS 10.15 | Safari 14.1 | Reading | Nothing displayed on screen and nothing voiced for object | |
| VoiceOver macOS 10.14 | Safari 13.0 | Reading | Nothing voiced for object - no indication it exists | |
| VoiceOver macOS 10.13 | Safari 12.1 | Reading | Nothing voiced for object - no indication it exists | |
| VoiceOver macOS 10.12 | Safari 10.1.2 | Reading | Nothing voiced for object - no indication it exists | |
| VoiceOver macOS 10.11 | Safari 9.1.2 | Reading | Nothing voiced for object - no indication it exists | |
| VoiceOver macOS 10.10 | Safari 9.0.1 | Reading | Nothing voiced for object - no indication it exists | |
| VoiceOver iOS 16.6 | Safari iOS 16.6 | Touch | This is ARIA-LABELLEDBY text. | |
| VoiceOver iOS 15.6 | Safari iOS 15.6 | Touch | This is ARIA-LABELLEDBY text. | |
| VoiceOver iOS 14.7 | Safari iOS 14.7 | Touch | Nothing voiced for object - no indication it exists | |
| VoiceOver iOS 13.3 | Safari iOS 13.3 | Touch | Nothing voiced for object - no indication it exists | |
| VoiceOver iOS 12.4 | Safari iOS 12.4 | Touch | Nothing voiced for object - no indication it exists | |
| VoiceOver iOS 11.4 | Safari iOS 11.4 | Touch | Nothing voiced for object - no indication it exists | |
| VoiceOver iOS 10.3 | Safari iOS 10.3 | Touch | Nothing voiced for object - no indication it exists | |
| VoiceOver iOS 9.1 | Safari iOS 9.1 | Touch | Nothing voiced for object - no indication it exists | |
| VoiceOver iOS 8.4 | Safari iOS 8.4 | Touch | Nothing voiced for object - no indication it exists | |
| Dolphin SR 15.05 | IE11 | Reading | No description of non-text content | Object, start button. Stop button. |
SortSite rules: AccHtmlObjectNoAccName AccHtmlTimedMediaPlaceholder
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