Skip to main content
Tick PowerMapper
 Try it now

PDF16 Document default language set to French Screen reader compatibility

PDF WCAG
Dec 12, 2023

Expected Result: works in a screen reader

Actual Result: causes problems in 39 screen reader / browser combinations

WCAG Technique: PDF16 Setting the default language using the /Lang entry in the document catalog of a PDF document

Code used for this test:


		<a href='SR_PDF_lang.pdf'>SR_PDF_lang.pdf</a>

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.

100%80%60%40%20%0%201520162017201817%201925%20200%20210%202225%202329%

Change History

Last updated: December 12, 2023

  • Bad NVDA with Chrome Causes problems from NVDA 2018.4 to NVDA 2023.3
  • Good NVDA with IE Stable - OK from NVDA 2017.3 to NVDA 2019.2
  • Better NVDA with FF Better - caused problems in NVDA 2021.2, but now OK in NVDA 2023.3
  • Bad JAWS with Chrome Causes problems from JAWS 2018.1811.2 to JAWS 2023.2311.34
  • Better JAWS with IE Better - caused problems in JAWS 2018.1811.2, but now OK in JAWS 2019.1912.1
  • Better JAWS with FF Better - caused problems in JAWS 2021.2107.12, but now OK in JAWS 2023.2311.34
  • Bad VoiceOver macOS Causes problems from VoiceOver macOS 10.14 to VoiceOver macOS 13.6
  • Bad VoiceOver iOS Causes problems from VoiceOver iOS 12.4 to VoiceOver iOS 16.6
Screen readerBrowserModeNotesWhat the user hears
Fail NVDA 2023.3Chrome 120 Reading Pronounced as English, document language ignored Act-if tay-bill
OK NVDA 2023.3FF 115 Reading Document pronounced as French, document language applied Act-eef tab-le
Fail NVDA 2023.3Edge 120 Reading Pronounced as English, document language ignored Act-if tay-bill
Fail NVDA 2022.2Chrome 105 Reading Pronounced as English, document language ignored Act-if tay-bill
OK NVDA 2022.2FF 102 Reading Document pronounced as French, document language applied Act-eef tab-le
Fail NVDA 2022.2Edge 105 Reading Pronounced as English, document language ignored Act-if tay-bill
Fail NVDA 2021.2Chrome 94 Reading Pronounced as English, document language ignored Act-if tay-bill
Fail NVDA 2021.2FF 91 Reading Pronounced as English, document language ignored Act-if tay-bill
Fail NVDA 2021.2Edge 94 Reading Pronounced as English, document language ignored Act-if tay-bill
Fail NVDA 2020.2Chrome 86 Reading Pronounced as English, document language ignored Act-if tay-bill
Fail NVDA 2020.2FF 78 Reading Pronounced as English, document language ignored Act-if tay-bill
Fail NVDA 2020.2Edge 92 Reading Pronounced as English, document language ignored Act-if tay-bill
Fail NVDA 2019.2Chrome 79 Reading Pronounced as English, document language ignored Act-if tay-bill
Fail NVDA 2019.2FF 68 Reading Pronounced as English, document language ignored Act-if tay-bill
OK NVDA 2019.2IE11 Reading Pronounced as French Act-eef tab-le
Fail NVDA 2018.4Chrome 73 Reading Pronounced as English, document language ignored Act-if tay-bill
Fail NVDA 2018.4FF 60 Reading Pronounced as English, document language ignored Act-if tay-bill
OK NVDA 2018.4IE11 Reading Pronounced as French Act-eef tab-le
OK NVDA 2017.3IE11 Reading Pronounced as French Act-eef tab-le
Fail JAWS 2023.2311.34Chrome 120 Reading Pronounced as English, document language ignored Act-if tay-bill
OK JAWS 2023.2311.34FF 115 Reading Document pronounced as French, document language applied Act-eef tab-le
Fail JAWS 2023.2311.34Edge 120 Reading Pronounced as English, document language ignored Act-if tay-bill
Fail JAWS 2022.2207.25Chrome 105 Reading Pronounced as English, document language ignored Act-if tay-bill
OK JAWS 2022.2207.25FF 102 Reading Document pronounced as French, document language applied Act-eef tab-le
Fail JAWS 2022.2207.25Edge 105 Reading Pronounced as English, document language ignored Act-if tay-bill
Fail JAWS 2021.2107.12Chrome 94 Reading Pronounced as English, document language ignored Act-if tay-bill
Fail JAWS 2021.2107.12FF 91 Reading Pronounced as English, document language ignored Act-if tay-bill
Fail JAWS 2021.2107.12Edge 94 Reading Pronounced as English, document language ignored Act-if tay-bill
Fail JAWS 2020.2008.24Chrome 86 Reading Pronounced as English, document language ignored Act-if tay-bill
Fail JAWS 2020.2008.24FF 78 Reading Pronounced as English, document language ignored Act-if tay-bill
Fail JAWS 2020.2008.24Edge 92 Reading Pronounced as English, document language ignored Act-if tay-bill
Fail JAWS 2019.1912.1Chrome 79 Reading Pronounced as English, document language ignored Act-if tay-bill
Fail JAWS 2019.1912.1FF 68 Reading Pronounced as English, document language ignored Act-if tay-bill
OK JAWS 2019.1912.1IE11 Reading Pronounced as French Act-eef tab-le
Fail JAWS 2018.1811.2IE11 Reading Pronounced as English, document language ignored Act-if tay-bill
Fail JAWS 2018.1811.2Chrome 73 Reading Pronounced as English, document language ignored Act-if tay-bill
Fail JAWS 2018.1811.2FF 60 Reading Pronounced as English, document language ignored Act-if tay-bill
OK JAWS 17.0.2007IE11 Reading Pronounced as French Act-eef tab-le
Fail VoiceOver macOS 13.6Safari 16.6 Reading Pronounced as English, document language ignored Act-if tay-bill
Fail VoiceOver macOS 12.5Safari 15.6 Reading Pronounced as English, document language ignored Act-if tay-bill
Fail VoiceOver macOS 11.5Safari 15.0 Reading Pronounced as English, document language ignored Act-if tay-bill
Fail VoiceOver macOS 10.15Safari 14.1 Reading Pronounced as English, document language ignored Act-if tay-bill
Fail VoiceOver macOS 10.14Safari 13.0 Reading Pronounced as English, document language ignored Act-if tay-bill
Fail VoiceOver iOS 16.6Safari 16.6TouchPronounced as English, document language ignored Act-if tay-bill
Fail VoiceOver iOS 15.6Safari iOS 15.6TouchPronounced as English, document language ignored Act-if tay-bill
Fail VoiceOver iOS 14.7Safari iOS 14.7TouchPronounced as English, document language ignored Act-if tay-bill
Fail VoiceOver iOS 13.3Safari iOS 13.3TouchPronounced as English, document language ignored Act-if tay-bill
Fail VoiceOver iOS 12.4Safari iOS 12.4TouchPronounced as English, document language ignored Act-if tay-bill

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