Screen reader reliability HTML, CSS and ARIA

Screen Readers
Dec 12, 2023

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.

ComboVersionsReliabilityTest Changes
JAWS ChromeJAWS 2023.2311.34 with Chrome 120
5 better
JAWS EdgeJAWS 2023.2311.34 with Edge 120
1 better
JAWS FirefoxJAWS 2023.2311.34 with FF 115
28 better
JAWS IEJAWS 2019.1912.1 with IE11
24 better
NVDA ChromeNVDA 2023.3 with Chrome 120
NVDA EdgeNVDA 2023.3 with Edge 120
NVDA FirefoxNVDA 2023.3 with FF 115
25 better
NVDA IENVDA 2019.2 with IE11
7 better
VoiceOver MacVoiceOver macOS 13.6 with Safari 16.6
26 better
VoiceOver iOSVoiceOver iOS 16.6 with Safari iOS 16.6
15 better
WindowEyes IEWindowEyes 9.2 with IE11
18 better 2 worse
Dolphin IEDolphin SR 15.05 with IE11
SaToGo IESaToGo 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).