ChatGPT doesn't see your product photos the way a customer does. When ChatGPT (with Browse, with web search, or as part of an enterprise integration) answers a visual query — "show me a wool sweater under $80," "find a credenza that fits under a window" — it reads the textual context around your images. The pages that get cited are the ones whose alt text, schema, and paragraph text are specific enough to match.

This guide covers the exact signals ChatGPT reads, the playbook for getting cited, and the most common mistakes that keep your images invisible.

What ChatGPT Actually Reads

When ChatGPT browses a page, it parses the HTML and extracts textual context. For images, that means:

1. Alt text — the value of the alt attribute. Highest leverage signal.
2. The paragraph immediately before and after the image.
3. Caption text (typically inside <figcaption>).
4. Schema markup — Product, ImageObject, Article.
5. Filename and URL. Lower leverage but a free win.

What it typically doesn't read at scale: EXIF data, custom HTML attributes, and the raw pixel content of images. ChatGPT does have vision capabilities (GPT-4 Vision), but in typical web-browsing/citation flows it leans heavily on textual context for relevance scoring and source selection.

Ecommerce Playbook

For product pages, optimize for the moment a shopper asks ChatGPT for a specific product. Five steps:

1. Specific alt text on every product photo

Bad: "Blue shirt". Good: "Men's heather grey crew-neck cotton t-shirt with embroidered chest logo, flat lay, men's medium". Name the product, attributes, and viewpoint. See 30+ Alt Text Examples.

2. Product schema with image array

{
  "@context": "https://schema.org",
  "@type": "Product",
  "name": "Men's Heather Grey Cotton T-shirt",
  "image": ["https://example.com/shirt-front.jpg", "..."],
  "description": "100% combed cotton, machine washable, ...",
  "offers": { "@type": "Offer", "price": "39.00", "priceCurrency": "USD" }
}

The schema reinforces what the alt text and page text say. AI assistants weigh schema heavily for product classification.

3. Specific product description paragraph

Generic "high-quality cotton blend" is useless. ChatGPT can't cite "high-quality cotton" as relevant to "wool sweater under $80." Make the description specific to attributes a customer might query.

4. Multilingual alt text if you sell internationally

ChatGPT serves users in any language. If your alt text is English-only, you're invisible to non-English visual queries. AltText.ai generates alt text in 130+ languages.

5. Clean URL structure for product pages

/products/men/shirts/heather-grey-cotton-tee beats /p/?id=84932. ChatGPT uses the URL as a relevance signal.

Content / Editorial Playbook

For blog posts, guides, and editorial content, the goal is being cited as a source. Three signals matter most:

1. Article schema with named author

ChatGPT prefers citing pages with clear authorship over anonymous content farms. Add Article schema with the author as a Person object including credentials where relevant.

2. Specific image descriptions inline

If your post about cacio e pepe has a photo, the alt text should say "Bowl of cacio e pepe pasta with cracked black pepper and shaved pecorino, served on a white linen napkin." Not "Pasta dish." The specific version is what AI assistants cite.

3. FAQPage schema for "people also ask" coverage

FAQ blocks are heavily used by AI for direct-answer queries. ChatGPT will cite a well-structured FAQ ahead of an unstructured paragraph that says the same thing.

Common Mistakes

1. Alt text only on hero images. ChatGPT looks at all images. Every product photo, gallery image, and inline illustration needs alt text.
2. Generic stock-photo alt text. Custom, specific descriptions outrank generic ones.
3. Loading images via JavaScript without server-side fallback. ChatGPT and most browsers without JS don't see them. Server-render the <img> tag.
4. Schema mismatched with visible content. Schema saying "blue shirt" while the page describes a "red sweater" gets penalized.
5. No og:image meta tag. ChatGPT uses Open Graph for the preview thumbnail it shows the user.

Measuring AI Citation Rate

Tracking whether ChatGPT cites your page is harder than tracking SEO. Some approaches:

• Manual sampling: ask ChatGPT (with Browse enabled) the queries you want to rank for and check whether your domain shows in the citations.
• Brand mentions in AI: tools like Profound and Otterly track brand citations across major AI assistants.
• Referral traffic from AI assistants: chat.openai.com, perplexity.ai, and claude.ai sometimes appear in your analytics referrer reports.

Next Steps

• Run a free accessibility crawl to find missing alt text
• Image SEO for AI Search (GEO) — broader GEO playbook
• AI Search Visibility Guide
• What Is Alt Text?