How to Tell if a Picture Is AI
You usually can’t tell by looking. Today’s AI image tools make pictures that look like real photos. The reliable way to tell is to check where the picture came from: where it was first posted, whether older copies exist, and whether it carries Content Credentials. And remember that most pictures you see are real, so the goal is to check, not to call everything fake.
5 Checks for Kids and Students
1. Look, but don’t stop there
Some AI pictures have a mistake: an animal’s fur that turns into scales, hands or legs that don’t add up, shadows that point the wrong way, letters that aren’t real letters. Check: If you spot one, that’s a clue, not proof. Newer AI tools rarely make these mistakes, so a perfect-looking picture tells you nothing.
2. Find where it was first posted
A real photo usually starts somewhere you can name: a photographer, a museum, a news agency, a photo library, a space agency. Check: Search for the picture or its caption. A brand-new post with no source is a warning sign.
3. Look for older copies
A real photo of a real place often has copies from years ago. A picture made last week can’t. Check: A reverse image search (with a grown-up) shows where else the picture appears and when.
4. Check for Content Credentials
Some cameras and AI tools attach Content Credentials: a label saying how the picture was made. Many AI image tools add one. Check: If a picture says it was made with AI, believe it. If it has no label, that proves nothing: most phone cameras don’t add one yet.
5. Ask before you share
Most pictures you see are real. The goal is to check, not to call everything fake. Check: If you can’t find where it came from, say “I’m not sure it’s real”, ask a grown-up, or don’t share it.
Practice: Real or AI?
In the free game, each picture is a real photo or an AI picture made to match it, about half and half. Students call each one, say how sure they are, and use Investigate to see where it was first posted, whether older copies exist and what its Content Credentials say. Calling a real photo fake counts against you, just like missing an AI one. On the last level, mostly real, a right answer only earns a star if you checked first.
Common Questions
Can you tell if a picture is AI just by looking?
Sometimes, but less and less. When we made 54 AI pictures with a current tool to match real photos, only 2 had a mistake you could see. Looking is a first step. Checking where a picture came from is what works.
Is there an app that tells you if a picture is AI?
There are detectors, but they make mistakes both ways: they call some real photos fake and miss some AI pictures. Treat a detector as one clue, never as the answer. Content Credentials, when a picture has them, are more trustworthy because the tool that made the picture wrote them.
What are Content Credentials?
A label stored inside a picture file that says how it was made and by which tool. Several AI image makers add one marking the picture as AI-generated, and some cameras add one for real photos. Many pictures have no label at all, so a missing label doesn’t tell you anything.
Are the pictures in the game real?
About half are real photos from Wikimedia Commons and NASA, credited on screen. The others were made with an AI image tool to match each photo, and they keep the tool’s Content Credentials. There are no people, faces, brands or news events.
What grades is it for, and do students need accounts?
Grades 4–8. It is free, has no ads and needs no sign-up or names. It runs in the browser on Chromebooks, tablets and phones.
Teachers: the Evidence Detective hub pairs this with “Is This Graph Lying?”, has a 20-minute class plan, and lists the standards.
Teachers: share this page with your class