How it works in your browser
Your image is opened directly by the browser — no server upload, no temporary copy stored anywhere we can reach. Drag the crop frame to position it, resize from the corners or edges, and the live readout shows the exact pixel dimensions of the selection. Open DevTools and switch to the Network tab while you crop: you will not see a single outbound image request. The file you drop in and the file you download both live entirely on your device.