Free PDF tools that respect your privacy — forever.
PDF Studio is a free, browser-based PDF toolkit. Twelve tools — edit, merge, split, convert, compress, watermark, protect, and more — all running entirely in your browser. No sign-up, no watermarks, no file size limits.
Every other PDF site charges for the basics or hides features behind a paywall. We don't. PDF Studio exists to make the everyday PDF tasks people need — adding an image, compressing for email, signing a document, converting Word to PDF — free for everyone, forever. Powered by donations and (eventually) banner ads, never by selling your files or data.
Every conversion, edit, and processing step happens inside your web browser using open-source libraries (pdf-lib, pdfjs, mammoth, docx). Your files are never uploaded to a server. When you close the tab, all data is gone. This is the same architecture used by privacy-first PDF tools, but with no premium tier behind a paywall.