Privacy proof
This page loads a real text file, removes duplicate lines with the same local module used by FileGizmo tools, and reports what your browser observed.
Live proof run
proof-sample.txt
Checking connection
The browser is preparing the sample.
The request count applies an origin test to every request the page makes. Same-origin page assets are not presented as off-origin traffic.
Test it offline
Open this page once while connected and wait for the proof run to finish. Then disconnect the network, reload, and press the button. The cached page, sample, and processor continue to work locally.
The first visit needs a connection. Clearing site data removes the cache, and a tool with a large engine may need its own assets loaded once before it can work offline.
When a file does leave your device
The Address to coordinates tool cannot derive map coordinates offline. It sends each address and a user-supplied API key directly to Geoapify. That permission exists only on that route. The full CSV is not sent to FileGizmo.
Bring your own key is not an ordinary local-only file tool. Provider mode is off by default. After you enable it, extracted document text and your key go directly from this browser to OpenAI. FileGizmo does not receive the key, the original document, or the extracted text.
Every ordinary file tool keeps the stricter same-origin connection policy described on the security page.