A first-pass media check for OSINT work
Open-source work depends on knowing which media to trust. Witness is a quick first pass for AI-generation likelihood, provenance data and metadata, built to sit beside your existing verification steps.
When people use Witness
Social media imagery
Scan images on a page in place with the Chrome extension.
Triage
Decide which images deserve a deeper forensic look.
Documenting a check
Keep the scan result with the source URL and date.
What Witness checks
AI-generation likelihood
Verdict, confidence and a heatmap.
C2PA and SynthID checks
Reads Content Credentials and checks for Google's watermark where supported.
Free browser tools
EXIF viewer and a reverse image search helper that run in your browser.
What Witness is not for
- Witness is not a full forensic suite and gives no geolocation or chronolocation.
- Use it alongside source analysis and other tools.
- Witness reports a likelihood with a confidence score. It does not prove anything on its own.
How it works
- 01
Drop in the file
Upload an image or video, or paste a link, or right click any image in Chrome with the extension.
- 02
Witness checks it
Several detection methods run in parallel, plus checks for provenance data such as Content Credentials and metadata.
- 03
Read the result
You get a likely real or likely AI-generated verdict with a confidence percentage and a plain-language explanation.
Frequently asked questions
Is the result usable as evidence?
Treat it as a lead, not evidence. Document your full method and use independent confirmation.
What about video?
Witness scans video for signs of AI generation and face swaps, with a per-frame view. Accuracy varies with compression and length.
Is Witness free?
Yes. You can try a few scans without an account, and a free account includes a monthly allowance. Pro raises the limits. See the pricing page for current plans.
Is a Witness result proof?
No. Witness gives a likelihood and a confidence percentage, plus an explanation. Use it as a second pair of eyes, not as a final ruling.
Related
Don't guess. Witness it.
Free to try. No account needed for your first scans. Witness gives a likelihood with a confidence percentage, not a certainty.