Language
Topic
Technique
WCAG AA Requirement
Page Language
Page Language: The primary language of the page MUST be identified accurately, using a standard language code, on the <html> element (e.g. <html lang="en"> or <html lang="fr">).
Required WCAG 3.1.1
Language of Parts
Language of Parts: Inline language changes MUST be identified with a valid lang attribute.
Required WCAG 3.1.2
Language Code
Two-character language code: The language code SHOULD be designated with a standard two-character ISO 639-1 code (e.g. lang="en") to achieve maximum support across screen readers and browsers, though other codes (e.g. lang="en-us") are technically allowable.
best practice
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