Description d'image IA
Uploadez une image — LLaVA l'analyse et génère une description précise avec des tags automatiques.
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JPG, PNG, WebP — max 25 MB
Analyse visuelle (20–40 secondes)
Publicité
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Free AI Image Captioning Online — Generate Alt Text and Descriptions
Generate accurate AI-written descriptions and alt text for any image. Upload a JPG, PNG or WebP and receive a human-readable caption instantly. Perfect for accessibility and SEO.
What the AI describes in your image
Our vision AI model analyzes the full image and generates a natural language description covering: main subjects (people, objects, animals, vehicles); actions and activities (what is happening in the scene); setting and environment (indoor/outdoor, location type, lighting); colors and visual style (dominant colors, artistic style, mood); text within the image (signs, labels, captions — basic OCR). The description is written in flowing natural English, not a keyword list.
Accessibility and SEO use cases
Web accessibility (WCAG compliance): every image on a website should have meaningful alt text so screen readers can describe images to visually impaired users. WCAG 2.1 Level AA requires meaningful image alt attributes. Our AI generates compliant, descriptive alt text automatically. SEO: descriptive alt text helps search engines understand image content, contributing to Google Image Search ranking and overall page relevance scoring. Social media: platforms like Twitter/X and Facebook automatically show alt text to screen reader users — use AI captions to make your social content accessible.
Limitations of AI image captioning
The AI describes what is visually present in the image — it cannot infer context not visible in the photo (e.g. the name of a person, the meaning of a diagram, or the intent behind an abstract artwork). For product images, the AI describes appearance but may not know the product name or model. Always review AI-generated captions for accuracy and add any domain-specific context the AI cannot see.
FAQ
What formats are supported for captioning?
JPG, PNG and WebP. GIF and animated formats are not supported — only the first frame would be analyzed.
Can I use this to generate alt text for website images?
Yes. This is one of the primary use cases. Copy the generated description as the alt attribute value for your tag. Edit it to add any product-specific or context-specific information the AI may have missed.
Does it recognize people's names or identities?
No. For privacy and ethical reasons, the AI does not perform facial recognition. People are described generically (e.g. "a woman in a blue dress" or "two people shaking hands") without identity attribution.
Can it read text visible in the image?
Yes, for clear printed text. Signs, labels, product packaging text and headlines are typically captured. Handwritten text and very small text may not be read accurately.
What is the maximum image file size?
Images up to 20 MB are supported.
Is my image stored after captioning?
No. Your image is processed immediately and deleted within 1 hour. No visual data is retained or used for model training.