Techniques
Identify the primary language of the page
Use the lang attribute on the <html> tag to specify the default language of the page – choose a specification from the ISO language codes to ensure it is recognised correctly.
Indicate any changes in language
If any text on a page is in a different language to the one specified on the <html> tag, you must indicate that so that screen readers know how to pronounce it;
Specifying a page’s language, or a momentary change in the language on the page, relies on providing a container element (span or div) around just the changed language text, and setting the lang attribute on that element.
Specifying languages in Word documents
- Select the text you want to specify a language for (select all of the content if you want to set the language for an entire Word document);
- On the “Review” ribbon, the “Language” option will provide a list of languages from which you can choose the appropriate one.
Specifying languages in PowerPoint documents
- Select the shapes you want to specify a language for;
- Under the “Tools” menu, the “Language” option will provide a list of languages from which you can choose the appropriate one.
An example of good practice
“Aujourd’hui”, the French word for “today”, in Word, with the correct language selected.
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An example of bad practice
“Aujourd’hui”, the French word for “today”, in Word, with the language still set to English (UK):

Correct code examples
Setting the primary language of a page:
- <html lang="en">
Specifying a temporary change in language:
- <p>How do you say "today" in French?</p>
- <p>You say <span lang="fr">Bonjour</span></p>
- <p>And in German?</p>
- <p lang="de">Guten tag </p>
- <p lang="ga"><a href="irish-version.html">as gaeilge</a></p>
References
WCAG 2.1
EN 301 549 v 2.1.2
- 9.3.1.1 Language of Page
- 9.3.1.2 Language of Parts