AI Image Caption Generator
Generate professional, descriptive captions for your images using advanced ViT-GPT2 AI technology. Perfect for accessibility, SEO optimization, social media content, and automated alt text generation.
Generation Settings
Upload an image to generate captions (JPEG, PNG, GIF, BMP, WebP)
Professional Image Captioning Features
Powered by state-of-the-art Vision Transformer (ViT) and GPT-2 models for accurate, contextual image descriptions.
Automatic Alt Text
Generate web accessibility-compliant alt text for images, improving SEO and making content accessible to all users.
Professional Descriptions
Generate detailed, contextual descriptions suitable for content creation, social media posts, and professional documentation.
Batch Processing
Process multiple images simultaneously, perfect for content creators, e-commerce, and bulk image management workflows.
Customizable Parameters
Adjust caption length, creativity level, and generation parameters to match your specific content needs and style preferences.
Privacy First
All processing happens locally in your browser. Your images never leave your device, ensuring complete privacy and data security.
Advanced AI Technology
Combines Vision Transformer (ViT) for image understanding with GPT-2 for natural language generation, delivering human-like captions.
Perfect for Various Applications
From accessibility compliance to content marketing, our AI image captioning tool serves multiple industries and use cases.
Web Accessibility
Generate compliant alt text for websites, ensuring accessibility for screen readers and improving overall user experience.
SEO Optimization
Improve search engine rankings with descriptive image captions and alt text that help search engines understand your content.
Social Media
Create engaging captions for Instagram, Facebook, Twitter, and other platforms to increase engagement and reach.
E-commerce
Automatically generate product descriptions and catalog content to streamline inventory management and improve customer experience.
Content Creation
Streamline blog writing, documentation, and content marketing with automatically generated image descriptions.
Digital Archives
Catalog and organize large image collections with descriptive metadata for easy searching and classification.
Educational Resources
Create accessible educational materials with descriptive captions for images in textbooks, presentations, and online courses.
Media & Publishing
Automate caption generation for news articles, magazines, and digital publications to speed up content production workflows.
Powered by State-of-the-Art AI
Our image captioning tool combines the power of Vision Transformer (ViT)for advanced image understanding with GPT-2 for natural language generation. This hybrid approach ensures both accurate visual recognition and human-like caption quality.
The ViT-GPT2 model processes images through attention-based vision transformers, extracting rich visual features that are then converted into coherent, contextual descriptions. All processing happens locally using Transformers.js, ensuring your privacy while delivering professional-grade results.
Model Specifications
Vision Model
Vision Transformer (ViT) - Base
Language Model
GPT-2 - 124M parameters
Training Data
COCO Captions Dataset
Model Size
~250MB (compressed)