How it works
In short: our server is just a shop that hands you the program. Your device does the actual work — which is why it’s both totally free and totally private.
Classic sites upload your file
Most converter sites send your file to their server, process it there and send it back. Powerful servers are expensive — hence the subscriptions, quotas and queues.
We do the work in your browser
When you open the site, the conversion programs come along to your browser. When you pick a file, it is processed right on your device and saved back to it. Your file goes nowhere.
Which technologies?
We use the browser’s Canvas engine for images, pdf-lib and pdf.js for PDFs, FFmpeg compiled to WebAssembly for video and audio, and SheetJS for spreadsheets.
Works even offline
Once loaded, the site is saved on your device. Add it to your home screen, use it like an app, and convert files even on a plane.