Most cameras and phones embed Exif metadata into every JPEG they save - the camera model, the exact date and time, camera settings, and often the precise GPS coordinates of where the photo was taken. None of that is visible when you just look at the image, but anyone who downloads the original file can read it. This tool reads that metadata locally in your browser so you can see exactly what's hidden in a photo, and can strip it out entirely before sharing the file - your photo is never uploaded anywhere in the process.