Accessibility Techniques for Page 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