EXIF, IPTC, XMP. What’s the difference?

EXIF: the camera’s notes

EXIF commonly stores capture information: exposure time, aperture, ISO, camera and lens details, orientation and GPS. A file can contain only some of these tags. Software can change them, so treat them as descriptive data rather than verified evidence.

IPTC: the story and the credits

IPTC photo metadata is often used for captions, creator details, copyright and descriptive information. These fields help photographers and publishers manage images, but they can also contain names or contact details you may not want to distribute.

XMP: an extensible container

XMP can carry many types of information, including descriptive metadata, editing history and copies of values found elsewhere. Removing one GPS or creator tag is not enough if the same information exists in another metadata block. That is why cleaning and checking all supported blocks matters.

A quick comparison

• EXIF: written by the camera at capture. Technical, and often includes GPS.
• IPTC: written by people or software to describe and credit a photo, with captions, keywords, creator, copyright and contact details.
• XMP: an extensible container, often written by editing software, that can hold descriptions, ratings, editing history and copies of values found elsewhere.

Why the same detail can appear twice

A creator name or a location can exist in more than one block, because editing programmes sometimes copy values from one block to another. That is why a good check reads all fields, and why removing a single tag rarely removes the information from the file.

Which one to worry about when sharing

It depends on what you share. EXIF is where GPS and camera serial numbers usually live. IPTC is where names, captions and contact details tend to be. XMP can reveal the software you use and, in some workflows, file names or editing steps.

If credit matters to you, remember that IPTC and XMP creator and copyright fields are metadata too, and a clean copy removes them.

Check all three before you share

1. Open a copy in EXIF Reader and choose All fields.
2. Look at the label under each field to see which kind of metadata it belongs to.
3. Note names and contact details (often IPTC), GPS and serial numbers (often EXIF) and editing history (often XMP).
4. Create a clean copy with Remove metadata.
5. Reopen the downloaded file and confirm that those fields are gone.

How to see them in Reader

Open the photo in EXIF Reader and choose All fields. Each row shows the field name and, underneath, the kind of metadata it comes from. Use the search box for words such as Creator, Copyright or GPS. If a kind of metadata does not appear, the file does not contain it.

Common questions

Do all photos have all three? No. Many phone photos carry only EXIF.

Which one do publishers use? IPTC fields are widely used in publishing workflows to carry captions and credits.

Can these fields be changed? Yes. They are easy to edit, so they describe a file but do not prove who made it or when.