About AIPhotoDetector.tools
AIPhotoDetector.tools is a small, independent tool for one question that comes up more every month: was this picture made by AI? It checks images in your own browser, explains the evidence behind its answer, and never uploads your photos.
Why we built AIPhotoDetector.tools
Image generators are now good enough that most people cannot tell a generated photo from a real one at a glance. At the same time, the tools for checking were frustrating. Most of them upload every image to a server, some publish scan results as public pages, and nearly all give a single percentage with no explanation. A number like "73% AI" does not tell you whether the generator signed the file or whether a model is guessing.
We started AIPhotoDetector.tools because we wanted a checker that respects privacy, shows its reasoning, and is honest about uncertainty, including saying "not sure" when that is the truthful answer.
How AIPhotoDetector.tools checks an image
Each check combines three independent lines of evidence:
- Content Credentials (C2PA), read and verified with the open-source c2pa library from the Content Authenticity Initiative.
- Metadata: EXIF, XMP, IPTC and PNG text fields, scanned for generator names, prompts and camera data.
- A detection model: a vision transformer (ViT-Small, 384×384 input) from the Community Forensics research project (CVPR 2025), trained on millions of real images and images from thousands of generators. It is released under the MIT licence. We ship a compressed version (current build: commfor-vits384-int8-2026.11) that runs with ONNX Runtime Web.
Signed credentials and generator tags take priority over the model score, because they are direct evidence. The model decides only when the file carries no labels.
Accuracy and limits
No AI image detector is always right, and we do not claim otherwise. The model is strong on many open-source generators and weaker on the newest commercial ones, especially after an image has been screenshotted or recompressed. Real photos with heavy filters or AI-assisted editing can score in the middle. We test every model version on a fixed set of real and generated images and publish the results by generator in the accuracy report.
Results are probabilities. Please do not use them as the only basis for an academic, legal, employment or disciplinary decision.
Privacy at AIPhotoDetector.tools
Your image is processed inside your browser tab. It is never sent to our servers or anyone else's, and we keep no record of what you check. The page downloads the model and the credential reader once and your browser caches them. Details are in the Privacy Policy.
Updates to the AIPhotoDetector.tools model
New image generators appear every few weeks, and detectors have to keep up. We plan to retrain and update the model regularly, add new generators to the test set, and note every change in the accuracy report so you can see how the detector improves over time.
How AIPhotoDetector.tools is funded
The detector is free and needs no account. The site may show a small number of ads to pay for hosting and model work. Ads never see your images, because your images never leave your device.
Contact
Found an image the detector gets wrong, a generator we should test, or a bug? Email us. If you can, tell us which generator made the image and how you obtained the file. Please do not send private photos of other people.