# 📸 ThumbnailGPT

**ThumbnailGPT** is an AI-powered web app that helps creators generate, evaluate, and enhance YouTube thumbnails using computer vision and natural language processing.

Built for the Hack Club community.

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## 🚀 Features

- 🧠 **Image Captioning**: Detects the content of any uploaded thumbnail.
- 🎯 **Thumbnail Scoring**: Evaluates thumbnails based on clarity, subject focus, text readability, and appeal.
- ✨ **AI Enhancement**: Suggests visual improvements using prompt engineering.
- 🖼️ **Live Preview**: Simulates how thumbnails would appear on YouTube in different sizes.
- 📊 **Results Dashboard**: Clear score breakdown and enhancement suggestions.

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## 🛠️ How to Use

1. **Click “Get for Free”**  
   On the hero section of the landing page, click **Get for Free**. It redirects you to `/home`.

2. **Upload a Thumbnail**  
   Drag and drop or click to upload a `.jpg`, `.png`, or `.webp` image.

3. **Auto-Captioning**  
   The app generates a text description of your image using a vision-language model.

4. **Get a Score**  
   The image is scored across several quality metrics: text visibility, object clarity, color contrast, and relevance.

5. **Enhance Using AI**  
   Click the **"Enhance with AI"** button to get improvement tips or a new prompt to generate better versions using generative tools.

6. **Download or Iterate**  
   Save the result or reupload an improved thumbnail and repeat the process.

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## ⚙️ Tech Stack

- **Frontend**: Next.js, TailwindCSS  
- **Backend**: Python (Flask), Hugging Face Transformers  
- **AI Models**:  
  - Image Captioning: `OpenRouter API`  
  - Working On Enhancement Engine: Custom prompt-enhancer fine-tuned on 5000+ thumbnails

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## 💡 Ideal For

- YouTubers who want instant feedback on their thumbnails  
- Designers looking to validate their visuals with AI  
- Developers building media tools for creators

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## 👥 Built By

**Sai Santosh Pal** – Class 10, passionate about AI, design, and coding.