Metric: Multimodal Readiness

How it's calculated

MultimodalReadiness = round(ImagesWithAlt / ImagesTotal × 100)

Simple percentage of images that have alt text attributes. Pages with no images score 100 (no issues).

Why it matters

Multimodal AI systems (GPT-4V, Claude Vision, Gemini) can process images, but they still rely on alt text for context. When AI crawlers encounter images without alt text, they lose information about:

• Product images that demonstrate features
• Charts and graphs that contain data
• Screenshots that show UI or workflows
• Infographics that summarise key points

Score interpretation

• 90–100: Excellent — most images are described for AI systems.
• 70–89: Good — some images lack descriptions.
• Below 70: Poor — significant visual information is invisible to AI.

Quick fix

Add descriptive alt text to every meaningful image. Decorative images can use alt="" (empty string). Focus on images that contain information (products, data, diagrams) rather than decoration.