I Built a Privacy-First PDF Toolbox — Your Files Never Leave the Browser

PDF Toolbox is a free, privacy-first toolkit that processes documents entirely within the browser using WebAssembly and pdf-lib. By utilizing browser memory, files never leave the user's device, eliminating server-side upload risks. The tool requires no registration or daily limits. It features eight local functions, including Compress, Merge, Split, PDF to JPG, JPG to PDF, PDF to Word, Unlock, and Protect, ensuring sensitive documents like tax returns and contracts remain secure on the local computer.