Cubrain - Automate Your Flashcards - Showcase Project
Listed January 21, 2026
About Cubrain - Automate Your Flashcards
AI Flashcard Generator with Precision PDF Extraction
I’m the maker of Cubrain. As a developer and language Learner, I spent way too much time making flashcards instead of studying them. So I built Cubrain to go from lecture PDF to 50 Anki cards in minutes. Most AI wrappers just dump text and hallucinate. Cubrain is different—it uses a coordinate-based extraction engine. It maps the exact visual location of your highlights to ensure the AI understands the full context with zero hallucinations. Core Features: 🎯 Precision Extraction: Extracts text based on visual coordinates (XY mapping). 🧠 Tier Synthesis: Smart batching for high-quality, atomic Q&A. ⚡ Svelte 5 & Spring Boot: Built for speed, reactivity, and real-time feedback (SSE). 📤 Anki Ready: Exports directly to CSV for Anki. 🛠️Tech stack: Svelte 5, TypeScript, Tailwind CSS, Spring Boot 3 (Java 21), PostgreSQL, LangChain4j, Google Gemini
Project details
Built with: Svelte 5,TypeScript,Tailwind CSS,Spring Boot 3 (Java 21),PostgreSQL,LangChain4j,Google Gemini
Website: https://cubrain.app
Video 1: https://youtu.be/H1v04wovMGQ?si=DVt82Rzwi_JBJM8e
Next step: <p>N/A</p>
Project metrics
Average Monthly Visitors: Under 1K/mo