Language missing or invalid

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Language missing or invalid

What It Means

The language of the document is not identified or a lang attribute value is invalid.

Why It Matters

Identifying the language of the page or page elements allows screen readers to read the content in the appropriate language. It also facilitates automatic translation of content.

What To Do

Identify the document language using the attribute with a valid value (e.g., ). Ensure that all lang attribute values are valid.

The Algorithm... in English

The attribute is missing or is empty, or a lang attribute value is not a valid language identifier.