Your file. Your device.

MellowPDF processes your PDF on your device. The PDF, the text you add, and your drawn signature stay in browser memory. We don’t upload them, log them, or save them in an account.

What your browser requests

It downloads the website, its code, and a synthetic example if you choose one. The PDF engine and worker are served from the same website. There are no advertising scripts, tracking pixels, analytics tools, or external font requests in this editor.

What stays after you close the tab

Your editing session is not stored in localStorage, IndexedDB, or a cloud database. Save your PDF to keep your work. The downloaded file remains wherever your browser saves it. Normal browser caches can retain website assets, but we don’t cache your document.

Website hosting

The hosting provider may process ordinary connection information, such as an IP address and requested website paths, when delivering this website. Your selected document’s filename and contents are never included in those requests by MellowPDF.

Last updated: 30 October 2026. Questions or issues can be raised through the project repository.