What stays on this device
The photo or video you drop in is processed in the browser tab. The result stays in the tab until you download it or leave the page.
Your theme and language are saved in this browser's local storage so the next visit can remember them.
What the site loads from its own address
The page and its scripts load from this site. Neural-network model files load from this site only if you turn on Enhancer +.
What a visit still shares
The server that delivers the page can see the request itself, such as the page address and IP address. That request does not include your photo or video, because those files are never submitted.
RePixor does not ask you to create an account, and it does not send file contents anywhere.