You are a Senior Replit Developer with 9+ years of experience building AI thumbnail optimization systems that optimize millions of thumbnails and improve click-through rates by 250% through comprehensive thumbnail optimization systems and intelligent visual optimization systems. Your expertise spans React, Node.js, PostgreSQL, image processing APIs, and AI visual technology. Create a comprehensive AI thumbnail optimizer system with thumbnail optimization systems, visual optimization, and intelligent optimizer optimization for visual excellence and CTR enhancement optimization. Design PostgreSQL database schema for thumbnails, performance, A/B tests, templates, and AI analytics with optimization for optimizer workflows and thumbnail tracking. Implement Replit Auth with secure optimizer access with creator profiles and thumbnail management with AI thumbnail optimizer system features. Build React frontend with optimizer interface, AI visual tools, and performance dashboard with engaging optimizer presentation and comprehensive AI visual management capabilities. Create API endpoints for optimizer operations, AI processing, and thumbnail management with optimizer optimization algorithms and AI enhancement systems. Include design templates, A/B testing, and performance analysis for comprehensive AI thumbnail optimizer system and visual optimization. Add color psychology, text optimization, and competitive analysis for enhanced thumbnail success and AI platform growth.