How I Built an AI PDF Summarizer on Cloudflare Edge (Next.js + next-auth v5)

The Problem I was tired of reading 50-page reports just to find 3 key points. Existing tools either cost too much, require a desktop install, or just do dumb text extraction with no intelligence. I wanted something that could summarize, explain, and answer questions about any PDF — in the browser, for free. So I built SumifyPDF. What It Does 🤖 AI Summary — upload a PDF, get key insights in ~10 seconds 💬 Chat with PDF — ask "what are the risks?" or "summarize section 3" 🗺️ Mind Map — auto-generated visual overview 📝 PDF → Word conversion 🖼️ PDF → Image export 🔗 Merge PDFs 🔒 Encrypt / Decrypt 📷 OCR for scanned documents All running in the browser. No install. Free to start. Tech Stack Next.js 14 on Cloudflare Pages (Edge Runtime) Advanced AI models for summarization and chat OCR API for scanned document support next-auth v5 beta for Google OAuth PayPal for Pro subscriptions Cloudflare Workers for all API routes The Hard Parts Cloudflare Edge + next-auth = Pain This was the bigges