AI Video Thumbnail Generator
AI Video Thumbnail Generator is an advanced AI-powered tool designed to create compelling, high-converting video thumbnails automatically. By leveraging Gemini 3 Pro technology, it analyzes video content and generates thumbnails optimized for maximum engagement across various platforms.
Key Features
- AI-Powered Generation: Automatically creates thumbnails using Gemini 3 Pro AI
- Multiple Input Sources: Supports video URLs (MP4 format), file uploads, and video screenshots
- Platform Optimization: Generates thumbnails perfectly sized for YouTube, TikTok, Instagram, and other social platforms
- Customizable Elements: Optional thumbnail titles and cover style selection
- Playground Interface: Interactive web interface for easy thumbnail generation
- API & MCP Support: Available for developers and integration with other tools
- Credit-Based System: Uses a credit system for thumbnail generation
Use Cases
- Content Creators: YouTube, TikTok, and Instagram creators needing professional thumbnails
- Social Media Managers: Professionals managing multiple video channels
- Marketing Teams: Creating thumbnails for promotional videos and ads
- Video Producers: Enhancing video presentation with AI-optimized thumbnails
- Developers: Integrating thumbnail generation via API into existing workflows
Technical Details
The tool supports MP4 video format with maximum file size of 100MB, offers regeneration capabilities, and provides thumbnails with appropriate aspect ratios for different platforms. It's part of the larger Tool.Video ecosystem, which includes various AI video generation tools.

