The shift to multimodal AI search
AI search engines no longer understand only text. Modern systems such as GPT-4o, Gemini and Claude process images, video and audio, and they increasingly give multimodal answers. For companies, this means optimizing text content alone is no longer enough.
Studies show that AI answers favor multimodal content when it adds context to a question. AI systems treat a product image with correct alt text and schema markup as an additional trust signal.
How to optimize images for AI search
Images are the easiest way into multimodal AI optimization. Put these measures in place:
- Descriptive alt text: not “image1.jpg” but a precise description of what the image shows. AI systems use alt text to classify images semantically
- ImageObject schema: structured data helps AI crawlers understand the context of your images
- Optimized file names: use descriptive file names instead of generic IDs
- Infographics with a text alternative: make sure the information in infographics is also available as text
Making video and audio visible to AI
Videos and podcasts are valuable content formats that AI systems index more and more. The key is accessibility:
- Provide transcripts: every video and every podcast should have a complete transcript. AI systems extract quotable information from it
- VideoObject schema: implement structured data with title, description, thumbnail and duration
- Timestamps and chapters: make it easier for AI systems to navigate long videos
- Subtitles (WebVTT): needed for accessibility, and AI crawlers use them too
Checklist: multimodal AI readiness
- All images have descriptive alt texts that give context
- Schema markup is implemented for images (ImageObject) and videos (VideoObject)
- Videos have complete transcripts as HTML text on the page
- Podcasts offer show notes with a summary and timestamps
- Infographics have a text-based alternative
- File names of all media are descriptive and keyword-relevant
- Images are available in modern formats (WebP, AVIF) with a fallback
The future of AI search is multimodal. If you optimize only text today, you will miss half of the visibility opportunities tomorrow.
Want to optimize your content fully for AI search? In our SEO content service we develop multimodal content strategies. Read What is GEO? to see how Generative Engine Optimization works in the bigger picture. As an SEO & GEO agency, we optimize every dimension of your AI visibility.
Also see which content formats LLMs process best and how llms.txt and structured data lay the technical foundation for AI visibility.