Image Caption
Auto-generate image descriptions with AI.
Drop image here or click to browse
Supports JPG, PNG, WebP, GIF, SVG, BMP — Max 10MB
How to Generate Captions
- Upload your image
- Choose short or detailed mode
- Click Generate, verify, and get your caption
What Is AI Image Captioning?
AI image captioning uses machine learning vision models to automatically generate natural language descriptions of image content. Our tool creates both short captions suitable for social media and detailed descriptions ideal for HTML alt text and accessibility. Accurate alt text is critical for visually impaired users who rely on screen readers, and it also helps search engines understand your image content for better SEO rankings.
Why Generate Image Captions?
- ✓Web accessibility compliance: The WCAG 2.1 guidelines require meaningful alt text for all informative images. AI-generated captions help you meet accessibility standards efficiently.
- ✓SEO improvement: Search engines cannot see images. Alt text tells Google and Bing what your images contain, helping your pages rank in image search results and regular search.
- ✓Social media engagement: Descriptive captions provide context and storytelling that increase engagement on Instagram, Twitter, and Facebook posts.
- ✓Content management at scale: If you manage hundreds or thousands of images, AI captioning generates alt text automatically, saving hours of manual writing.
- ✓Screen reader support: Blind and visually impaired users depend on alt text to understand web content. Good captions make your website inclusive and accessible to everyone.
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Image Captioning Best Practices
Review and Refine AI Output
AI-generated captions are accurate but may miss specific context. Review the output and add relevant details like proper nouns, locations, or event names that the AI cannot know.
Keep Alt Text Concise
For HTML alt attributes, aim for 125 characters or fewer. Screen readers may cut off longer text. Use the full description for figure captions or social media posts.
Describe Function, Not Appearance
For functional images like buttons or links, describe what the image does rather than what it looks like. For decorative images, use an empty alt attribute.
Frequently Asked Questions
How accurate are the captions?▼
Our AI produces accurate descriptions for most images. It identifies objects, people, activities, settings, and moods. However, it may not recognize specific individuals, brands, or locations by name.
What languages are captions generated in?▼
Captions are currently generated in English. You can translate the output to other languages using any translation service.
Can I generate captions in bulk?▼
Currently the tool processes one image at a time for the highest quality results. Upload each image individually for the best captions.