https://www.youtube.com/watch?v=ZxC5_frMkDg

Overview

LovePrinter is a web-based design editor that allows users to personalize professionally designed templates for special occasions. The application includes an AI writing assistant, support for multiple page sizes, ready-to-print booklets, and a user-friendly interface that requires no design skills.

The core challenge was building a flexible design tool that non-technical users could use while keeping the infrastructure scalable and cost-effective.

Architecture

LovePrinter is a Next.js application deployed on a DigitalOcean VPS. The entire application runs inside a Docker container for consistent deployments.

Tech Stack

Application Framework

• Next.js with React and server-side rendering
• Next.js API routes (Node.js) for backend logic
• NextAuth.js for authentication with Google OAuth
• Puppeteer for PDF and image rendering

Data Layer

• PostgreSQL (Neon) for application data
• Redis (Upstash) for rate limiting and caching
• Google Cloud Storage for user-uploaded images

External Services

• Stripe for payment processing
• Google Gemini API for AI writing assistance