AI Image Caption Generator | APIVerve API Tutorial

A beautiful React application that uses AI to generate intelligent captions for any image. Upload an image and get an instant, accurate description.

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Features

• AI-powered image captioning
• Drag and drop image upload
• Beautiful gradient UI design
• Caption history with thumbnails
• One-click copy to clipboard
• Support for JPG, PNG, and GIF
• Responsive mobile design
• Real-time loading states

Quick Start

1. Clone this repository

   git clone https://github.com/apiverve/image-caption-react-tutorial.git
   cd image-caption-react-tutorial

2. Install dependencies

   npm install

3. Add your API key

   Open .env and add your API key:

   VITE_API_KEY=your-api-key-here
   

4. Start the development server

   npm run dev

5. Open in browser

   Navigate to http://localhost:5173

Project Structure

image-caption-react-tutorial/
├── src/
│   ├── App.jsx          # Main component with API logic
│   ├── App.css          # Styling
│   └── main.jsx         # React entry point
├── index.html           # HTML template
├── package.json         # Dependencies
├── vite.config.js       # Vite configuration
├── .env                 # Environment variables (add your API key)
├── screenshot.jpg       # Preview image
├── LICENSE              # MIT license
├── .gitignore           # Git ignore rules
└── README.md            # This file

How It Works

1. User uploads image - Drag & drop or click to select
2. Image preview - Shows the selected image
3. API request - Sends image to APIVerve Image Caption API
4. AI analysis - API uses computer vision to understand the image
5. Caption display - Shows generated caption with copy button
6. History tracking - Keeps recent captions for reference

The API Call

const formData = new FormData();
formData.append('image', imageFile);

const response = await fetch(API_URL, {
  method: 'POST',
  headers: {
    'x-api-key': API_KEY
  },
  body: formData
});

API Reference

Endpoint: POST https://api.apiverve.com/v1/imagecaption

Headers:

Header	Value
x-api-key	Your API key

Request Body: multipart/form-data

Field	Type	Required	Description
image	file	Yes	Image file (JPG, PNG, GIF, max 5MB)

Example Response:

{
  "status": "ok",
  "error": null,
  "data": {
    "caption": "A golden retriever dog sitting on a grassy lawn in a park during sunset",
    "confidence": 0.95
  }
}

Use Cases

AI image captioning is powerful for:

• Accessibility - Generate alt text for visually impaired users
• Content Management - Auto-tag images in CMS systems
• Social Media - Generate engaging captions for posts
• E-commerce - Create product image descriptions
• Photo Organization - Search and categorize images
• SEO - Improve image search rankings with descriptions
• Archiving - Document image contents for future reference

Customization Ideas

• Add batch processing for multiple images
• Integrate with cloud storage (S3, Google Cloud)
• Add caption editing and refinement
• Support URL-based image input
• Add language translation for captions
• Export captions to CSV/JSON
• Add caption styling options

Tech Stack

• React 18 - UI framework
• Vite - Build tool and dev server
• CSS3 - Styling with gradients and animations

Related APIs

Explore more APIs at APIVerve:

• Image Classify - Classify images into categories
• NSFW Detector - Detect inappropriate content
• Image to Text (OCR) - Extract text from images

License

MIT - see LICENSE

Links

• Get API Key - Sign up free
• APIVerve Marketplace - Browse 300+ APIs
• Image Caption API - API details