{"slug": "semantic-image-optimizer", "title": "Semantic Image Optimizer", "summary": "An e-commerce image optimization method using Google's AI models and vector embeddings iteratively generated and scored product alt text, improving semantic similarity from 59% to 83% over ten attempts. The best caption, 'Four colorful fabric wristbands: red, blue, gray, and light green, are arranged diagonally on a light background,' was achieved for a Google Fitbit Air product image. The approach is part of the AI Influence app Auxy.", "body_md": "An overview of an e-commerce image optimization method using Google's AI models and vector embeddings to iteratively generate and score product alt text.\n\nI saw a really cool post written by Gianluca Fiorelli [shared on LinkedIn today](https://www.linkedin.com/feed/update/urn:li:activity:7498709392712790016/) and I'd love to share how we approach image optimization for e-commerce and multi-modal AI search.\n\nThe above image is located on the official [Google Fitbit Air](https://store.google.com/au/product/google_fitbit_air) page. We upload the image alongside the source URL and the original alt text.\n\n```\n<img data-component-name=\"media_area_image\" jscontroller=\"Tbys9b\" jsaction=\"rcuQ6b:npT2md;k0bule:jAmaef\" class=\"WeYPde\" src=\"https://lh3.googleusercontent.com/2B_ulFLMDz6jJXNnoktx_QgeEMEDAt-UfvbmEmTitaG4Y1eUt6qIGblB7CiHJHnKw0lraLHMu1rC1RyOi-aF-EBr31WtlNY52A=w1156-h924-rw-nu\" alt=\"\" width=\"1156\" height=\"924\" loading=\"eager\" decoding=\"auto\" fetchpriority=\"auto\">\n```\n\nOur optimizer uses Google's latest model to generate vector embeddings of multimedia inputs to provide our optimization algorithm with semantic similarity scoring.\n\nHere is the full list of attempts:\n\n| Step | Match | Δ | Caption |\n|---|---|---|---|\n| 0 | 59% | . | |\n| 1 | 78% | +19% | Four colorful wristbands are displayed diagonally on a light background. |\n| 2 | 82% | +4% | Four colored fabric wristbands, red, blue, gray, and light green, are arranged diagonally on a white background. |\n| 3 | 81% | -2% | Four woven fabric wristbands, red, blue, gray, and light green, are arranged diagonally on a light white background. |\n| 4 | 79% | -2% | Four woven fabric wristbands: red, blue, gray, and light green, diagonally on white. |\n| 5 | 80% | +1% | Four colorful woven fabric wristbands, red, blue, gray, and light green, are arranged diagonally on a white background. |\n| 6 | 81% | +1% | Four colored fabric wristbands in red, blue, gray, and light green, shown diagonally on white. |\n| 7 | 83% | +2% | Four colorful fabric wristbands, red, blue, gray, and light green, are arranged diagonally on a light background. |\n| 8 | 82% | -1% | Four colorful fabric wristbands, red, blue, gray, and light green, are arranged diagonally on a bright white background. |\n| 9 | 83% | +1% | Four colorful fabric wristbands: red, blue, gray, and light green, are arranged diagonally on a light background. |\n| 10 | 83% | 0% | Four fabric wristbands: red, blue, gray, and light green, arranged diagonally on a light background. |\n\nAfter ten iterations the best matching alt text is:\n\n**Four colorful fabric wristbands: red, blue, gray, and light green, are arranged diagonally on a light background.**\n\nImage optimizer is small part of our [AI Influence app, Auxy](https://app.auxy.com/).", "url": "https://wpnews.pro/news/semantic-image-optimizer", "canonical_source": "https://dejan.ai/blog/image-optimizer/", "published_at": "2026-08-30 03:58:55+00:00", "updated_at": "2026-08-30 04:21:35.808576+00:00", "lang": "en", "topics": ["artificial-intelligence", "generative-ai", "ai-tools"], "entities": ["Google", "Gianluca Fiorelli", "Fitbit Air", "Auxy"], "alternates": {"html": "https://wpnews.pro/news/semantic-image-optimizer", "markdown": "https://wpnews.pro/news/semantic-image-optimizer.md", "text": "https://wpnews.pro/news/semantic-image-optimizer.txt", "jsonld": "https://wpnews.pro/news/semantic-image-optimizer.jsonld"}}