Generic image check
AI Image Detector: Check If a Photo Is AI-Generated
Want to tell if an image is AI-generated but do not know which tool made it? Use this AI image detector for unknown-source checks. Slop or Not reads SynthID watermarks, signed C2PA Content Credentials, and editable IPTC metadata first, then scores the pixels with a classifier trained on millions of human and AI images when no readable provenance or watermark resolves the file. Online checks stay away from outside AI companies.
A SynthID checker finds stamped images. Slop or Not also checks the ones nobody stamped.
It reads SynthID from Google and OpenAI images, verifies C2PA Content Credentials, reads generator fingerprints, and scans the pixels.
- You can testPhotos, screenshots, product images, receipts, and profile pictures up to 8 MB.
- ResultA probability verdict, AI score, and source details when the file carries them.
- PrivacyChecked on hardware we own and run. We never pass your photo to OpenAI, Google, or any other AI company.
What it checks
Check Unknown-Source AI Images Across Provenance and Pixels
SynthID watermark checks for supported OpenAI and Google/Gemini images
C2PA Content Credentials and IPTC metadata when the file carries them
Image classifier output when provenance is stripped or inconclusive
Good Uses
- Checking profile photos before trusting an account
- Reviewing product images before publishing or buying
- Screening AI-looking images when the source model is unknown
Limits to Know
- SynthID exists only on images from generators that stamp it, so other generators are checked through credentials and the image model
- Screenshots can remove C2PA/IPTC metadata, while heavy edits can weaken watermark signals
- The result is a probability unless a readable watermark or signed credential is present
FAQ
AI Image Detector Questions
Is this also an AI photo detector?
Yes. Photo, picture, and image searches all use the same Slop or Not workflow: check the file for AI provenance clues, then read visual generator signals when the file has no readable watermark or metadata.
Does the online checker run on-device?
No. Online checks run on a private Mac server and are not shared with third-party AI providers. The iPhone and Mac apps run detection on-device.
Can it prove an image is human-made?
No AI detector can prove human authorship in every case. Missing provenance is not a clean bill of authenticity, so Slop or Not reports evidence and probability for human review.
Run the Next Check on Your iPhone or Mac
The Slop or Not app checks images and text on-device, so nothing you check ever leaves your device.
More from Numen
Two more apps that run on your device. Neither needs an account.
Private LLM
A Local AI chatbot for uncensored open-source models that runs offline on iPhone, iPad, and Mac. Private LLM uses OmniQuant and GPTQ quantization tuned per model, so its 3-bit models match the 4-bit models other apps ship.
Clean Links
Most tracking now hides behind link redirects. Clean Links unwraps short links and strips every tracking parameter from a URL before you share it, on iPhone, iPad, Mac, and the web.
Related checks
Compare Related Detector Workflows
ChatGPT Image Detector
Free ChatGPT image detector and checker. Slop or Not reads OpenAI C2PA and SynthID watermark signals, then checks the pixels. No account needed.
Gemini AI Image Detector
Check whether a photo came from Nano Banana or Gemini image generation. Slop or Not reads Google SynthID and C2PA/IPTC metadata, then checks the pixels.
SynthID Detector
Free SynthID detector: check an image for Google and OpenAI SynthID watermark signals online, or run the check on-device on iPhone and Mac.
Real or Fake Photo Checker
Is this photo real, AI-generated, or AI-edited? Slop or Not reads the signed credential, then the SynthID watermark, then the pixels. Free, no account.
