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Look alike unicode chars Screen reader compatibility

HTML WCAG
Nov 26, 2024

Expected Result: causes problems in some screen readers

Actual Result: causes problems in 90 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.

WCAG Failure: F71

Code used for this test:

<pre>
	ϲоοk
	</pre>

Change History

Last updated: November 26, 2024

  • Bad NVDA with Chrome Causes problems from NVDA 2018.4 to NVDA 2024.4
  • Bad NVDA with IE Causes problems from NVDA 2012.1 to NVDA 2019.2
  • Bad NVDA with FF Causes problems from NVDA 2012.1 to NVDA 2024.4
  • Bad JAWS with Chrome Causes problems from JAWS 2018.1811.2 to JAWS 2024.2409.2
  • Bad JAWS with IE Causes problems from JAWS 13.0.852 to JAWS 2019.1912.1
  • Bad JAWS with FF Causes problems from JAWS 13.0.852 to JAWS 2024.2409.2
  • Bad VoiceOver macOS Causes problems from VoiceOver macOS 10.9 to VoiceOver macOS 14.6
  • Bad VoiceOver iOS Causes problems from VoiceOver iOS 7.1 to VoiceOver iOS 17.7
  • Bad WindowEyes with IE Causes problems from WindowEyes 8.4 to WindowEyes 9.2
  • Bad Dolphin with IE Causes problems in Dolphin SR 15.05
  • Bad SaToGo with IE Causes problems in SaToGo 3.4.96.0
Screen readerBrowserModeNotesWhat the user hears
Fail NVDA 2024.4Chrome 131 Reading Most look-alike characters ignored. Omichron K
Fail NVDA 2024.4FF 128 Reading Most look-alike characters ignored. Omichron K
Fail NVDA 2024.4Edge 131 Reading Most look-alike characters ignored. Omichron K
Fail NVDA 2023.3Chrome 120 Reading Most look-alike characters ignored. Omichron K
Fail NVDA 2023.3FF 115 Reading Most look-alike characters ignored. Omichron K
Fail NVDA 2023.3Edge 120 Reading Most look-alike characters ignored. Omichron K
Fail NVDA 2022.2Chrome 105 Reading Most look-alike characters ignored. Omichron K
Fail NVDA 2022.2FF 102 Reading Most look-alike characters ignored. Omichron K
Fail NVDA 2022.2Edge 105 Reading Most look-alike characters ignored. Omichron K
Fail NVDA 2021.2Chrome 94 Reading Most look-alike characters ignored. Omichron K
Fail NVDA 2021.2FF 91 Reading Most look-alike characters ignored. Omichron K
Fail NVDA 2021.2Edge 94 Reading Most look-alike characters ignored. Omichron K
Fail NVDA 2020.2Chrome 86 Reading Most look-alike characters ignored, only last letter of word read. K
Fail NVDA 2020.2FF 78 Reading Most look-alike characters ignored, only last letter of word read. K
Fail NVDA 2020.2Edge 92 Reading Most look-alike characters ignored, only last letter of word read. K
Fail NVDA 2019.2Chrome 79 Reading Most look-alike characters ignored. Omichron K
Fail NVDA 2019.2FF 68 Reading Most look-alike characters ignored. Omichron K
Fail NVDA 2019.2IE11 Reading Most look-alike characters ignored. Omichron K
Fail NVDA 2018.4Chrome 73 Reading Most look-alike characters ignored. Omichron K
Fail NVDA 2018.4FF 60 Reading Most look-alike characters ignored. Omichron K
Fail NVDA 2018.4IE11 Reading Most look-alike characters ignored. Omichron K
Fail NVDA 2017.3FF 60 Reading Look-alike character codes read out instead of word. Letter 3F2, omicron K
Fail NVDA 2017.3IE11 Reading Look-alike character codes read out instead of word. Letter 3F2, omicron K
Fail NVDA 2016.2FF 48 Reading Look-alike character codes read out instead of word. Letter 3F2, omicron K
Fail NVDA 2016.2IE11 Reading Look-alike character codes read out instead of word. Letter 3F2, omicron K
Fail NVDA 2015.2FF 41 Reading Look-alike character codes read out instead of word. Letter 3F2, omicron K
Fail NVDA 2015.2IE11 Reading Look-alike character codes read out instead of word. Letter 3F2, omicron K
Fail NVDA 2014.1FF 29 Reading Look-alike character codes read out instead of word. Letter 43, letter F2, omicron K
Fail NVDA 2014.1IE11 Reading Look-alike character codes read out instead of word. Letter 43, letter F2, omicron K
Fail NVDA 2012.1FF 29 Reading Look-alike character codes read out instead of word. Letter 43, letter F2, omicron K
Fail NVDA 2012.1IE11 Reading Look-alike character codes read out instead of word. Letter 43, letter F2, omicron K
Fail JAWS 2024.2409.2Chrome 131 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 2024.2409.2FF 128 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 2024.2409.2Edge 131 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 2023.2311.34Chrome 120 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 2023.2311.34FF 115 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 2023.2311.34Edge 120 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 2022.2207.25Chrome 105 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 2022.2207.25FF 102 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 2022.2207.25Edge 105 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 2021.2107.12Chrome 94 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 2021.2107.12FF 91 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 2021.2107.12Edge 94 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 2020.2008.24Chrome 86 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 2020.2008.24FF 78 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 2020.2008.24Edge 92 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 2019.1912.1Chrome 79 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 2019.1912.1FF 68 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 2019.1912.1IE11 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 2018.1811.2Chrome 73 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 2018.1811.2FF 60 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 2018.1811.2IE11 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 18.0.5038FF 52 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 18.0.5038IE11 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 17.0.2619FF 48 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 17.0.2619IE11 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 16.0.4350FF 41 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 16.0.4350IE11 Reading Most look-alike characters ignored. Omichron K
Fail JAWS 15.0.9023FF 29 Reading Look-alike characters ignored, only last letter of word read. K
Fail JAWS 15.0.9023IE11 Reading Look-alike characters ignored, only last letter of word read. K
Fail JAWS 14.0.9002FF 29 Reading Look-alike characters ignored, only last letter of word read. K
Fail JAWS 14.0.9002IE11 Reading Look-alike characters ignored, only last letter of word read. K
Fail JAWS 13.0.852FF 29 Reading Look-alike characters ignored, only last letter of word read. K
Fail JAWS 13.0.852IE11 Reading Look-alike characters ignored, only last letter of word read. K
Fail WindowEyes 9.2IE11 Reading Look-alike characters ignored, only last letter of word read. K
Fail WindowEyes 8.4IE11 Reading Look-alike characters ignored, only last letter of word read. K
Fail VoiceOver macOS 14.6Safari 17.6 Reading Look-alike characters skipped or pronounced using rules of language character is from. Oh kay
Fail VoiceOver macOS 13.6Safari 16.6 Reading Look-alike characters skipped or pronounced using rules of language character is from. Oh kay
Fail VoiceOver macOS 12.5Safari 15.6 Reading Look-alike characters skipped or pronounced using rules of language character is from. Oh kay
Fail VoiceOver macOS 11.5Safari 15.0 Reading Look-alike characters skipped or pronounced using rules of language character is from. Omichron
Fail VoiceOver macOS 10.15Safari 14.1 Reading Look-alike characters skipped or pronounced using rules of language character is from. Omichron
Fail VoiceOver macOS 10.14Safari 13.0 Reading Look-alike characters skipped or pronounced using rules of language character is from. Omichron
Fail VoiceOver macOS 10.13Safari 12.1 Reading Look-alike characters skipped or pronounced using rules of language character is from. Omichron
Fail VoiceOver macOS 10.12Safari 10.1.2 Reading Look-alike characters skipped or pronounced using rules of language character is from. Omichron
Fail VoiceOver macOS 10.11Safari 9.1.2 Reading Look-alike characters skipped or pronounced using rules of language character is from. Omichron
Fail VoiceOver macOS 10.10Safari 9.0.1 Reading Look-alike characters skipped or pronounced using rules of language character is from. Omichron
Fail VoiceOver macOS 10.9Safari 7.0.3 Reading Look-alike characters skipped or pronounced using rules of language character is from. Omichron
Fail VoiceOver iOS 17.7Safari iOS 17.7TouchLook-alike character names read out or pronounced using rules of language character is from. Greek lunate sigma symbol, oh, omichron, kay
Fail VoiceOver iOS 16.6Safari iOS 16.6TouchLook-alike character names read out or pronounced using rules of language character is from. Greek lunate sigma symbol, oh, omichron, kay
Fail VoiceOver iOS 15.6Safari iOS 15.6TouchLook-alike character names read out or pronounced using rules of language character is from. Greek lunate sigma symbol, oh, omichron, kay
Fail VoiceOver iOS 14.7Safari iOS 14.7TouchLook-alike character names read out or pronounced using rules of language character is from. Greek lunate sigma symbol, oh, omichron, kay
Fail VoiceOver iOS 13.3Safari iOS 13.3TouchLook-alike characters skipped completely.
Fail VoiceOver iOS 12.4Safari iOS 12.4TouchLook-alike characters skipped completely.
Fail VoiceOver iOS 11.4Safari iOS 11.4TouchLook-alike characters skipped completely.
Fail VoiceOver iOS 10.3Safari iOS 10.3TouchLook-alike characters skipped completely.
Fail VoiceOver iOS 9.1Safari iOS 9.1TouchLook-alike characters skipped completely.
Fail VoiceOver iOS 8.4Safari iOS 8.4TouchLook-alike characters skipped completely.
Fail VoiceOver iOS 7.1Safari iOS 7.1TouchLook-alike characters skipped or pronounced using rules of language character is from. Ooh omichron kay
Fail Dolphin SR 15.05IE11 Reading Look-alike characters ignored, only last letter of word read. K
Fail SaToGo 3.4.96.0IE11 Reading Look-alike characters ignored, only last letter of word read. K

SortSite rules: AccWcag2-F71-1

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