ZeroCloudPDF

ZeroCloudPDF is a free, privacy-first PDF toolkit that processes every file entirely inside your browser. Nothing is ever uploaded to a server, verified simply by disconnecting from the internet and confirming the tools still work.

The suite includes converting images (JPG, PNG, WEBP, HEIC, GIF, BMP, TIFF, SVG) to PDF, compressing PDFs, merging multiple PDFs, converting Word documents to PDF, exporting PDF pages as JPG or PNG images, adding page numbers with full formatting control, and password protecting or unlocking PDFs using genuine 256-bit AES encryption via QPDF compiled to WebAssembly.

Every other tool runs on pure JavaScript, no WebAssembly, for maximum transparency and compatibility. The full architecture, including the reasoning behind these engineering decisions, is documented publicly as Architecture Decision Records on GitHub.

Built solo, bootstrapped, from India. No account required for any tool. No usage limits. No watermarks.