The main site does not make it obvious but you can self host this. I could see this being something handy to run on a RPi or something if you have family that works with PDF's but doesn't want to buy a tool or really have to "understand" it. GitHub: https://github.com/ulinycoin/clientpdf-pro GitHub Archive: https://archive.today/z1nL5 Archive: https://archive.today/HLdIV From the post: >>Privacy-First PDF Tools Professional PDF processing tools that work entirely in your browser