PowerMapper
PowerMapper
Screen reader reliability HTML, CSS and ARIA
Overall reliability of HTML, CSS and ARIA features designed for assistive technology in different screen reader / browser combinations.
The graph only includes results for tests which are expected to work. Expected failures (e.g. missing ALT on an IMG) are not included in the graph.
The solid area in the graph shows percentage of tests that pass in all tested interaction modes. The cross hatched area shows partial passes that only work in some interaction modes.
An example of a partial pass is when form labels are read when tabbing, but ignored in browse mode.
| Combo | Versions | Reliability | Test Changes |
|---|---|---|---|
| JAWS Chrome | JAWS 2025.2508.120 with Chrome 143 | 7 better | |
| JAWS Edge | JAWS 2025.2508.120 with Edge 143 | 1 better | |
| JAWS Firefox | JAWS 2025.2508.120 with FF 140 | 30 better | |
| JAWS IE | JAWS 2019.1912.1 with IE11 | 24 better | |
| NVDA Chrome | NVDA 2025.3 with Chrome 143 | 9 better | |
| NVDA Edge | NVDA 2025.3 with Edge 143 | 7 better | |
| NVDA Firefox | NVDA 2025.3 with FF 140 | 31 better | |
| NVDA IE | NVDA 2019.2 with IE11 | 7 better | |
| VoiceOver Mac | VoiceOver macOS 15.7 with Safari 26.0 | 31 better | |
| VoiceOver iOS | VoiceOver iOS 18.6 with Safari iOS 18.6 | 19 better | |
| WindowEyes IE | WindowEyes 9.2 with IE11 | 18 better 2 worse | |
| Dolphin IE | Dolphin SR 15.05 with IE11 | ||
| SaToGo IE | SaToGo 3.4.96.0 with IE11 | ||
| Average | Including older versions |
The average includes all versions, but some browser/AT combinations have tests for multiple versions (NVDA / JAWS / VoiceOver), while others only have tests for a single version (SaToGo and Dolphin).