What is EXIF data, and what does your photo reveal?
Every photo from a phone or camera is more than the picture. It also carries a block of hidden text called EXIF data. Most of it is harmless, but one part can show exactly where you were standing.
What EXIF stands for
EXIF stands for Exchangeable Image File Format. It is a standard way for a camera to write details about a shot into the image file itself. Photo apps read it to sort pictures by date, show the camera model, or put photos on a map.
JPG photos use EXIF most. PNG and WebP files can carry it too, and the newer HEIC format used by iPhones has the same kind of data.
What is usually inside
- The camera or phone make and model, and sometimes the lens.
- The date and time the photo was taken.
- Exposure settings such as shutter speed, aperture, ISO and focal length.
- The orientation of the photo, so apps know which way is up.
- The software that last edited the file.
- Sometimes a camera serial number or the name of the owner, if it was set on the device.
- GPS coordinates, if the camera was allowed to record location.
The part that matters for privacy: GPS
Phones add GPS coordinates to photos when the camera app has permission to use your location. Those numbers can be precise enough to point at a house. If you photograph your home, your child's school or a place you do not want strangers to find, and then share the original file, the location can travel with it.
Many large social platforms remove location data from the public copy of a photo, but this is not guaranteed everywhere and policies change. It is safer not to rely on it. Sending the original file by email, as a document in a chat app, through a cloud link, or on a forum or classifieds site can keep the data intact.
How to see what your photo contains
You can use the photo metadata checker on Toolstia. Drop in a photo and it lists what it finds, including whether GPS coordinates are present. It runs in your browser, so the photo is not uploaded.
You can also look on your own device. On Windows, right-click the file, choose Properties, then the Details tab. On a Mac, open the photo in Preview and choose Tools, then Show Inspector. Both show a lot of the data, including a GPS section when there is one.
How to control it
- Turn off location for the camera app in your phone settings if you do not want it recorded at all.
- Before sharing, remove metadata from the copy you send. A cleaned copy is rebuilt from the picture alone, so the EXIF block is not carried over.
- Keep your original. It is the version that holds the full record of the shot.
What removing EXIF does not do
Removing EXIF only removes the file data. It does not change what the picture shows. A street sign, a recognisable view or a reflection can still give away where a photo was taken. Think about the picture itself, not only the hidden data.