Protect PDF Tool

Hybrid PDF Protect tool (Client + API)

• Small files: client-side PDF password protection (pdf-lib)
• Large files (>5MB): API (Node.js + ILovePDF) protection

Usage

• Upload PDF
• Enter password
• Click Protect PDF
• Download protected file

Deploy

• Frontend: GitHub Pages or Vercel
• Backend API: Node.js server or Vercel Serverless function