Questions
Is 4 × 6 cm the same as a 4 × 6 photo print?
No. A 4 × 6 photo print is 4 × 6 inches (10 × 15 cm), more than six times larger. ID photos called "4x6" are in centimetres. For the print size use the 4 × 6 inch page.
How many pixels is 4 × 6 cm?
472 × 709 pixels at 300 DPI, the usual print standard. The same size is 315 × 472 pixels at 200 DPI and 945 × 1417 pixels at 600 DPI. A form that lists it in pixels wants that exact width and height, so type them into Width and Height if they differ.
What DPI should I use?
300 DPI is the usual standard for photo prints and gives sharp results. Some online forms ask for 200 DPI; change it under Settings and the pixel size updates to match.
Is my photo uploaded to a server?
No. The resizing runs inside your browser with JavaScript, so the image stays on your device. Nothing is uploaded unless you choose to share it with "Share by link" in the Download step. Once the page has loaded, resizing keeps working even if you go offline. If your device can't handle an image, the tool can shrink it on our server instead, but only if you agree, and it is deleted right away.