PowerMapper
PowerMapper
Interactive iframe with negative tabindex and no accessible name
Screen reader compatibility
HTML
Dec 14, 2025
Expected Result: causes problems in some screen readers
Actual Result: causes problems in 30 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.
Tests if tabindex=-1 affects accessibility tree.
Code used for this test:
<iframe src='1234.html' width='400' height='100' tabindex='-1'> </iframe>
Change History
Last updated: December 14, 2025
- NVDA with Chrome Causes problems in NVDA 2025.3
- NVDA with FF Causes problems in NVDA 2025.3
- JAWS with Chrome Causes problems in JAWS 2025.2508.120
- JAWS with FF Causes problems in JAWS 2025.2508.120
- VoiceOver macOS Causes problems from VoiceOver macOS 13.6 to VoiceOver macOS 15.7
- VoiceOver iOS Stable - OK from VoiceOver iOS 16.6 to VoiceOver iOS 18.6
| Screen reader | Browser | Mode | Notes | What the user hears |
|---|---|---|---|---|
| NVDA 2025.3 | Chrome 143 | Reading | Frame, this a link, example hyperlink, in the target page. | |
| NVDA 2025.3 | Chrome 143 | Tabbing | Skips over focusable link in iframe | |
| NVDA 2025.3 | FF 140 | Reading | Frame, this a link, example hyperlink, in the target page. | |
| NVDA 2025.3 | FF 140 | Tabbing | Skips over focusable link in iframe | |
| NVDA 2025.3 | Edge 143 | Reading | Frame, this a link, example hyperlink, in the target page. | |
| NVDA 2025.3 | Edge 143 | Tabbing | Skips over focusable link in iframe | |
| NVDA 2024.4 | Chrome 131 | Reading | Frame, this a link, example hyperlink, in the target page. | |
| NVDA 2024.4 | Chrome 131 | Tabbing | Skips over focusable link in iframe | |
| NVDA 2024.4 | FF 128 | Reading | Frame, this a link, example hyperlink, in the target page. | |
| NVDA 2024.4 | FF 128 | Tabbing | Skips over focusable link in iframe | |
| NVDA 2024.4 | Edge 131 | Reading | Frame, this a link, example hyperlink, in the target page. | |
| NVDA 2024.4 | Edge 131 | Tabbing | Skips over focusable link in iframe | |
| NVDA 2023.3 | Chrome 120 | Reading | Frame, this a link, example hyperlink, in the target page. | |
| NVDA 2023.3 | Chrome 120 | Tabbing | Skips over focusable link in iframe | |
| NVDA 2023.3 | FF 115 | Reading | Frame, this a link, example hyperlink, in the target page. | |
| NVDA 2023.3 | FF 115 | Tabbing | Skips over focusable link in iframe | |
| NVDA 2023.3 | Edge 120 | Reading | Frame, this a link, example hyperlink, in the target page. | |
| NVDA 2023.3 | Edge 120 | Tabbing | Skips over focusable link in iframe | |
| NVDA 2022.2 | Chrome 118 | Reading | Frame, this a link, example hyperlink, in the target page. | |
| NVDA 2022.2 | Chrome 118 | Tabbing | Skips over focusable link in iframe | |
| NVDA 2022.2 | FF 102 | Reading | Frame, this a link, example hyperlink, in the target page. | |
| NVDA 2022.2 | FF 102 | Tabbing | Skips over focusable link in iframe | |
| NVDA 2022.2 | Edge 120 | Reading | Frame, this a link, example hyperlink, in the target page. | |
| NVDA 2022.2 | Edge 120 | Tabbing | Skips over focusable link in iframe | |
| JAWS 2025.2508.120 | Chrome 143 | Reading | This is an. Link, example hyperlink. In the target page. | |
| JAWS 2025.2508.120 | Chrome 143 | Tabbing | Skips over focusable link in iframe | |
| JAWS 2025.2508.120 | FF 140 | Reading | role=presentation makes frame seamless | This is an. Link, example hyperlink. In the target page. |
| JAWS 2025.2508.120 | FF 140 | Tabbing | Skips over focusable link in iframe | |
| JAWS 2025.2508.120 | Edge 143 | Reading | This is an. Link, example hyperlink. In the target page. | |
| JAWS 2025.2508.120 | Edge 143 | Tabbing | Skips over focusable link in iframe | |
| JAWS 2024.2409.2 | Chrome 131 | Reading | This is an. Link, example hyperlink. In the target page. | |
| JAWS 2024.2409.2 | Chrome 131 | Tabbing | Skips over focusable link in iframe | |
| JAWS 2024.2409.2 | FF 128 | Reading | role=presentation makes frame seamless | This is an. Link, example hyperlink. In the target page. |
| JAWS 2024.2409.2 | FF 128 | Tabbing | Skips over focusable link in iframe | |
| JAWS 2024.2409.2 | Edge 131 | Reading | This is an. Link, example hyperlink. In the target page. | |
| JAWS 2024.2409.2 | Edge 131 | Tabbing | Skips over focusable link in iframe | |
| JAWS 2023.2311.34 | Chrome 120 | Reading | This is an. Link, example hyperlink. In the target page. | |
| JAWS 2023.2311.34 | Chrome 120 | Tabbing | Skips over focusable link in iframe | |
| JAWS 2023.2311.34 | FF 115 | Reading | role=presentation makes frame seamless | This is an. Link, example hyperlink. In the target page. |
| JAWS 2023.2311.34 | FF 115 | Tabbing | Skips over focusable link in iframe | |
| JAWS 2023.2311.34 | Edge 120 | Reading | This is an. Link, example hyperlink. In the target page. | |
| JAWS 2023.2311.34 | Edge 120 | Tabbing | Skips over focusable link in iframe | |
| JAWS 2022.2207.25 | Chrome 118 | Reading | This is an. Link, example hyperlink. In the target page. | |
| JAWS 2022.2207.25 | Chrome 118 | Tabbing | Skips over focusable link in iframe | |
| JAWS 2022.2207.25 | FF 102 | Reading | role=presentation makes frame seamless | This is an. Link, example hyperlink. In the target page. |
| JAWS 2022.2207.25 | FF 102 | Tabbing | Skips over focusable link in iframe | |
| JAWS 2022.2207.25 | Edge 120 | Reading | This is an. Link, example hyperlink. In the target page. | |
| JAWS 2022.2207.25 | Edge 120 | Tabbing | Skips over focusable link in iframe | |
| VoiceOver macOS 15.7 | Safari 26.0 | Reading | Meaningless frame title read out. | Frame six |
| VoiceOver macOS 15.7 | Safari 26.0 | Tabbing | Skips over focusable link in iframe | |
| VoiceOver macOS 14.6 | Safari 17.6 | Reading | Meaningless frame title read out. | Frame six |
| VoiceOver macOS 14.6 | Safari 17.6 | Tabbing | Skips over focusable link in iframe | |
| VoiceOver macOS 13.6 | Safari 16.6 | Reading | Meaningless frame title read out. | Frame six |
| VoiceOver macOS 13.6 | Safari 16.6 | Tabbing | Skips over focusable link in iframe | |
| VoiceOver iOS 18.6 | Safari iOS 18.6 | Touch | This is an. Example hyperlink, link. In the target page. | |
| VoiceOver iOS 17.7 | Safari iOS 17.7 | Touch | This is an. Example hyperlink, link. In the target page. | |
| VoiceOver iOS 16.6 | Safari iOS 16.6 | Touch | This is an. Example hyperlink, link. In the target page. |
SortSite rules: AccHtmlIframeTabindexInteractive
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