embed-text-alternative-quality
<embed> text alternative must be appropriate (manual review)
Flags <embed> elements with a detected name for human review of appropriateness.
Applies to. Applies to <embed> elements that already carry a text alternative: a non-empty aria-label, an aria-labelledby that resolves to non-empty text, or a non-empty title. An aria-labelledby pointing at a missing id resolves to nothing and so is not a text alternative to review; that element is embed-text-alternative-present's failure. The element must be included in the accessibility tree, and role="presentation"/"none" takes it out of scope unless it is focusable, which restores its role.
Expectation. Human review is required to confirm that the provided text alternative is accurate and appropriate.
Examples
<embed src="report.pdf" type="application/pdf" title="Quarterly report PDF">
A `title` is present — worth confirming it identifies the document well enough for someone who can't see the embedded viewer.
<embed src="report.pdf" type="application/pdf">
No aria-label, resolved aria-labelledby, or title exists to review; that's `embed-text-alternative-present`'s failure instead.