Writing
Posts about file privacy, how browser tools work without uploading, and what changes when AI runs on your computer.
Why uploading your PDF is the actual risk
2026-05-02
Most "free PDF tool" sites upload your file to a server. Here is what that means for tax forms, contracts, and medical records — and why running the conversion in your browser tab is different.
Running AI on your computer instead of in the cloud
2026-05-02
A plain-language look at what changes when an AI summary or alt-text generator runs on your laptop instead of OpenAI: speed, accuracy, file privacy, and what to expect on a 5-year-old machine.
How a browser tab can convert a PDF without uploading it
2026-05-02
A non-technical walkthrough of what actually happens when you drop a PDF onto OnDevice — why no file leaves your computer, what loads from the network, and how to verify it yourself in DevTools.
How to pick file tools that work on a plane
2026-05-02
Offline-capable utilities are rare. A practical checklist for spotting tools that genuinely work without internet — versus ones that pretend to be local but quietly need a server.
Auditing the privacy claims on this site
2026-05-02
OnDevice claims your files never leave your computer. Here is how to confirm or break that claim in five minutes using your browser DevTools — including which third-party scripts do load, and why.