●Detection · Images
AI image detector.
Find out if an image was made by AI. Research-backed ensemble models, a clear result and the reasons behind it. Free, no account required.
●Platform
Detect it. Explain it. Act on it.
Every scan returns the same three things: a result, the signals that produced it, and a decision you can route on.
01
Detect
Every file is scanned by independent models for images, video and faces, in the web tool, the extension or by API.
3 / 4 signals corroborateCalibrated likelihood
02
Explain
See which signals fired and how strongly. No single model decides; every result comes with its reasons.
Result: AI-generated · 0.92<3s
03
Decide
A plain-language result, Real or AI-generated, with a likelihood and the reasons behind it.
●Coverage
Trained on the generators people actually use.
Retrained regularly as new models release.
Diffusion
Other
●Method
What a scan checks.
Each check runs as an independent model. Results corroborate before a result is returned.
01
Generative fingerprints
Statistical traces left by diffusion models and GANs.
02
Frequency artefacts
Patterns invisible to the eye but measurable in the spectrum.
03
Provenance
Content Credentials (C2PA) and EXIF, when present.
The pipeline
A detector for each kind of media.
Image, video and voice each have their own detector. Their findings come back as one clear answer you can act on.
Image
Diffusion, GAN and face-swap images from Midjourney, DALL·E, Stable Diffusion, Flux and Firefly.
LiveVideo
Face swaps across 32 frames and fully generated video from Runway, Kling, Veo and Pika.
LiveVoice
Cloned and synthesised speech in calls, notes and recordings.
LiveWhat you get
Each file is marked Real or AI-generated, with the likelihood, signals and audit ID behind it.
One answer●Who uses it
From newsrooms to claims desks.
Filter AI-generated profile photos and catfish accounts.
Screen damage photos at intake.
Verify source images and UGC under deadline.
Catch AI-generated refund evidence.
Screen exhibits before they enter proceedings.
Check suspicious images from social feeds and group chats.
●How it works
Three steps. One result.
Upload or paste a URL
JPG, PNG or WebP. Drag and drop, paste, or enter a link.
Ensemble analysis
Multiple models check fingerprints, frequency and provenance.
Clear result
Real or AI-generated, with a likelihood and a plain-language explanation.
●Integration
Three ways in.
Start with the web app.
Scan in the web app or Chrome extension today. The REST API and MCP server for your AI agents are coming soon. Same detectors, same result, same audit trail.
Web app
AvailableUpload in the web app. Images, video and voice, up to 50 MB. Full results in seconds.
Chrome extension
AvailableScan any image or video from inside the tools your team already uses. No download, no upload.
API
SoonSingle scans, batch jobs and webhooks. Structured JSON with result, likelihood, signals and audit ID.
curl -X POST https://witness.vision/api/v1/detect \ -H "Authorization: Bearer $WITNESS_KEY" \ -H "Content-Type: application/json" \ -d '{"media_url": "https://…/uploaded_image.png"}' → 200 OK · 412ms result: ai_generated · 0.92
●Why Witness
Built to be checked.
We say what the system does, what it returns and where its limits are.
Detection built per signal
Specialized models per signal, so you get more coverage and fewer false positives than one classifier.
Reasons, not just a score
Every result shows the signals behind it and where in the file they fired.
Analysed, then gone
Media is never stored, shared or used for training.
Provenance, when it exists
Reads Content Credentials from capture device to current file.
●Explore
One engine. Every surface.
The same detection, result and audit trail across every team that handles media.
Enterprise
Insurance
Screen damage photos and injury documentation for AI generation before they reach your adjusters.
Explore →Enterprise
Legal
Know which exhibits warrant forensic review.
Explore →Enterprise
Fraud detection
Detect AI-generated images, face-swapped video and cloned voices inside your fraud stack.
Explore →Enterprise
E-commerce
Screen damage, missing-item and not-as-described evidence for AI generation and reuse, before the refund is issued..
Explore →Product
Chrome extension
Scan media on any site, social feeds, news, claims portals, case files, and get a result in the side panel..
Explore →How do I check if an image is AI-generated?
Upload it to Witness or scan any image with the Chrome extension. You get a result, a likelihood and the signals found.
Can AI-generated images be detected?
Yes. They contain statistical patterns invisible to the eye. Ensemble approaches that combine methods perform best.
Is it free?
5 scans a day with no signup; 15 a day with a free account.
How accurate is it?
Accuracy varies by generator. Every scan shows a likelihood and the signals behind it, so you can see why a result was reached.