Best AI Image Detector For Teachers

Teachers face AI images in two ways: students submitting AI art as their own, and AI images in classroom materials and student research. Tools help with both, but none should be the sole basis for an accusation. Disclosure: the first tool below is made by Patrick Bushe, who runs this site.

Tools worth knowing

• AI Image Detector: AI Image Detector is a free Chrome extension that reads an image's metadata and flags AI generator names, Stable Diffusion settings and AI tags. Right-click an image to check it. The standard check doesn't upload images, which matters for student work.
• Content Credentials Verify: Content Credentials Verify shows signed creation histories, including AI use, for files that carry them.
• Google Lens: finds where an image appears online; a student's "original" artwork showing up on an AI art site is strong evidence.
• Visual detectors: services such as Hive score images for AI. Their scores aren't reliable enough on their own to discipline a student.

What tools can't show

Metadata is often stripped when students screenshot, export or upload through learning platforms. "No Metadata Found" doesn't mean the student made it. Visual detectors produce false positives, particularly on digital art made with brushes, filters and effects.

A fair approach

1. Set a clear AI policy for each assignment.
2. Ask for process evidence: sketches, drafts, layered files or time-lapses.
3. If you're concerned, talk with the student about how they made it.
4. Use tools as one input, alongside the student's other work.
5. Follow your school's academic integrity process.

Teaching with it

Checking images together is a useful media literacy exercise: have students run reverse searches, read metadata and spot visual clues on a mix of real and AI images.

See AI art in student assignments and a teacher's guide.