AI Alt Text Generator

Alt text describes an image for users who cannot see it. Screen readers speak this text aloud. Search engines read it to understand image content. Google uses alt text as a primary ranking signal for Google Image Search.

Picture Optimizer's AI examines the image and writes a direct description. A photo of a red 2024 Ford Mustang GT parked in front of a brick warehouse receives: "Red 2024 Ford Mustang GT parked in front of a red brick warehouse on a clear day." Not "car image" or "photo." The AI identifies the specific make, model, color, setting, and conditions.

The engine sends each image to a multimodal large language model trained on billions of image-text pairs. The model processes the image through a vision transformer that encodes spatial relationships, object boundaries, text content, and scene composition.

It does not guess. It reads text in the image using OCR. It identifies brand logos. It distinguishes between a German Shepherd and a Golden Retriever. It recognizes indoor vs outdoor settings, time of day, weather conditions, and human activities.

The output is a natural-language description written for the web — concise, specific, and free of filler words.

The WordPress plugin writes AI-generated alt text directly to each image's alt field in the Media Library. Select images. Run the AI analysis pipeline. The plugin populates the alt text field for every processed image.

Existing alt text is not overwritten unless you choose to re-process. The AI respects your editorial control. After processing, review and edit any alt text through the standard WordPress media editor.

WCAG 2.1 Success Criterion 1.1.1 requires non-text content to have a text alternative. Section 508 of the Rehabilitation Act mandates the same for U.S. government and government-funded websites. The ADA has been interpreted by courts to apply to commercial websites.

Picture Optimizer generates alt text that meets these standards. Each description is specific to the image content, avoids redundant phrases like "image of" or "picture of" (the HTML img element already communicates that), and stays under 125 characters when possible — the practical limit for screen reader comprehension.