Traditional web tools require you to upload data to a remote server. Even when the operator promises deletion, a copy of your file or text exists on someone else’s disk for some period of time.

Privacy boundary (visual)

Server-side toolyour fileserverdata leaves your controlBrowser tool (itsfully)ALL work inside your browser sandboxno upload · no server copy · zero exposure windowresult never leaves devicelock

Local tools remove the entire class of risk that comes from “send it to the cloud and trust us.” The diagram above is the entire argument.