Visible data ≠ hidden data.
Visible pixels and hidden file data are different things. Privacy work often means checking both what people can see and what the file still carries with it.
Smart / Local Tools
Find visible faces locally, blur them, and export a privacy-safe copy without uploading the image to an editing service.
Private by design: your image stays in this browser tab. Face detection is local; browsers without native face detection use a local person-detection fallback.
Useful to know
Visible pixels and hidden file data are different things. Privacy work often means checking both what people can see and what the file still carries with it.
Blur can leave information recognisable, and removing metadata does not hide text, faces, notifications or locations visible inside the image itself.
Automatic results still need a human check around edges, text, faces and small details.
Make a separate sharing copy. Keep the untouched original somewhere private instead of overwriting it.