I built a free online PDF toolbox that runs entirely in the browser

I built a free online PDF toolbox that runs entirely in the browser Hey fellow developers! 👋 I just launched PDFToolBox - a collection of free online PDF tools. ## Why I built this Most online PDF tools require you to upload your files to their servers. I wanted to build something different - a tool that processes everything in your browser. ## Key Features 100% Privacy: Files never leave your device No Registration: Start using immediately No File Limits: Process as many files as you want Completely Free: No premium tier, no watermarks Tech Stack React + TypeScript Vite Tailwind CSS pdf-lib for PDF manipulation PDF.js for rendering ## The Challenge The biggest technical challenge was implementing PDF processing in the browser. I used pdf-lib for creating/modifying PDFs and PDF.js for rendering. This means: No backend server needed No privacy concerns Works offline after initial load ## Try it out 👉 https://pdf-toolbox.asia Would love to hear your feedback! What features would you like to see next?