With an AI key, Fix with AI in the Accessibility check box does three things. Alt text: the AI looks at each picture that has none, or a file name for alt text, and writes one plain sentence saying what it shows; pure decoration is marked as such; the media library alt is filled at the same time. Frame names: YouTube, Vimeo, maps, Spotify and the rest are named from where they come from with no AI call; anything unknown gets a short name from its address. Heading order: a skipped level moves up and a second H1 becomes an H2, with the block markup kept in step so the editor never complains. It changes the editor, not the database; you read the result and save. Up to eight pictures per run. The rest, an empty link or an unlabelled field, needs a person, and the list says so. The AI key: on the AI tab, choose Google Gemini (a free-tier key is available from Google AI Studio), Anthropic Claude or OpenAI, paste the key, save, and press Test the connection. You pay the provider directly at cost. When the ResultsAiX Theme is active its key is used instead and there is nothing to set here.