Global lang-attribute validity (validity)

The global language attribute includes a valid language code such as for example, "en", "fr" or "fi" (ISO 639-1 Language Codes)


Invalid primary language tag:

This page uses lang="em-US", but em is not a recognized primary language subtag. As a result, the lang value is invalid and fails WCAG 3.1.1.

Note: Possible to automatically test. Automated tools can compare language tag values against the BCP 47 specification and detect invalid primary language subtags.

axe detected: 3.1.1  |  QualWeb detected: 3.1.1