See your photo's hidden data

When you take a photo, your camera or phone doesn't just save the picture. It quietly writes a little notebook inside the file — the exact date and time down to the second, often the GPS location, the camera and lens you used, and dozens of technical settings like aperture, shutter speed, and ISO. That notebook is called EXIF data (short for “Exchangeable Image File Format,” but nobody needs to remember that).

This is wonderful news if you're trying to organize old photos. A file mysteriously named IMG_4372.jpg can tell you it was actually taken on July 4, 2019 at 6:42 PM in Logan Square, Chicago, on an iPhone XS. The answers to “when was this?” and “where were we?” were inside the file all along.

It can also be a privacy surprise. If a photo still has its GPS data, anyone you send the original file to can see exactly where it was taken — including your home. Most social media sites strip this data out when you post (which is also why photos downloaded from Facebook or Instagram show up empty in this tool), but files sent by email, text, or cloud link usually keep everything.

Screenshots never have EXIF data, because they were never taken by a camera. Scans and edited copies often lose theirs too. That's one big reason a family photo collection turns into a dateless jumble — and one big reason it's worth keeping your originals safe.