AI Image Detector
Upload any image and find out if it was created by AI. Powered by research-backed ensemble models. Free, fast, no account required.
Three steps. One answer.
Upload or paste a URL
JPG, PNG, or WebP. Drag and drop, paste from clipboard, or enter a direct image URL.
AI analyzes the image
Multiple detection models check for generative fingerprints, frequency artifacts, and provenance metadata.
Get a clear verdict
Real, Synthetic, or Uncertain. Plus a confidence score and plain-language explanation of what was found.
Detects images from every major AI generator.
Witness is trained on output from the generators people actually use and retrains regularly as new models release.
Built different.
Free tier, no account
5 scans per day with zero signup. Create a free account for 15 images/day.
Ensemble detection
Multiple models analyze each image in parallel. More signals, fewer false positives.
Chrome extension
Right-click any image on the web to check it. Works on Twitter/X, Instagram, Reddit, and every other site.
Privacy-first
Images are analyzed and immediately discarded. Nothing is stored. Nothing is shared.
How Witness compares.
There are many AI detection tools. Here is how they differ on what actually matters: what they detect, how they detect it, and what it costs.
| Capability | Witness | Hive | AI or Not | Resemble AI | SightEngine |
|---|---|---|---|---|---|
| Images | Yes | Yes | Yes | Yes | Yes |
| Videos | Yes | Yes | No | Yes | No |
| Audio / voice clones | Coming soon | Yes | No | Yes | No |
| Face swap detection | Yes | No | No | No | No |
| Ensemble models | Yes | Single | Single | Single | Single |
| Provenance (C2PA) | Yes | No | No | Yes | No |
| Free scans / day | 5 (15 w/ account) | Unlimited | Limited | 4 | Limited |
| Account required | No | No | Yes | Yes | Yes |
| Price (paid tier) | $15/mo | Free ext / API paid | From $10/mo | Free beta | From $23/mo |
Data as of September 2026. Features and pricing may have changed. If you spot an error, email us at support@witness.vision.
Common questions.
How to check if an image is AI-generated?
Upload the image to Witness or use our Chrome extension to right-click any image on the web. Witness analyzes it with multiple detection models and returns a verdict (Real, Synthetic, or Uncertain) with a confidence score.
Can AI-generated images be detected?
Yes. AI-generated images contain statistical patterns invisible to the human eye. Trained detection models identify these fingerprints with high accuracy. Ensemble approaches that combine multiple methods perform best.
What is the best free AI image detector?
Witness offers free AI image detection with no account required. 5 scans per day. It uses ensemble detection (multiple models) and also provides a Chrome extension for checking images directly in your browser.
How accurate is AI image detection?
Human accuracy at detecting AI images is approximately 50%, no better than guessing. Automated detection tools significantly outperform humans. Accuracy varies by generator; ensemble approaches achieve the best results across different AI models.
Check any image. Free.
No account needed. No watermarks. Upload an image and get a clear answer in seconds.