Vellum’s tools are written in JavaScript and WebAssembly, and executed by the user’s browser. The program travels to the user, never the other way around: the document stays on their device. This architecture removes any data transfer to a third party, and it can be verified by watching the Network tab of the developer tools during a job.
Vellum — trente-trois outils PDF gratuits dont le traitement reste sur votre appareil.