I built a privacy-first document tools platform where files never leave your browser

I want you to try something right now. Open your favourite online PDF tool, image converter, or background remover. Now turn off your Wi-Fi and try to use it. Did it work? If it didn't — and it almost certainly didn't — then that tool is silently doing something with your files that it probably isn't telling you about. Every "instant" cloud tool has a server at the other end. And every server is a potential breach, a data-scraping node, or a jurisdiction you've never heard of. This is the Airplane Mode Test . If it doesn't pass, it isn't truly private. At MojoDocs , we built 1,000+ file utilities — PDF compressors, image converters, background removers, deepfake detectors — that all pass this test. Here's the engineering stack that made it possible, and why we think this is the future of developer tooling. Why "The Cloud Is Secure" Is a Lie We Tell Ourselves The SaaS surveillance playbook goes like this: Offer a free tool that solves a painful problem (PDF merging, image resizing, form