Why file-upload handling matters
A server-based image converter must receive the selected file before it can process it. That transfer adds another system that needs appropriate retention, access-control, and security practices.
For personal photographs and documents, reducing unnecessary copies can be useful. Local processing is one technical design choice, not a guarantee of compliance with a particular privacy, health, or security law.
What browser-based processing changes
WebAssembly allows compiled code to run inside the browser sandbox, while Web Workers can move CPU-intensive image operations away from the main interface thread. Supported decoding, pixel manipulation, and encoding can therefore happen in local device memory.
On WebpForge’s current local converter routes, selected image bytes are not sent to a conversion API. The browser still makes normal requests for site files and may make advertising requests if the visitor allows them. The Privacy Policy documents that distinction.