Dedicated Provenance Scanner
Gemini SynthID Checker
Learn what an independent provenance checker can and cannot verify about Google SynthID and Gemini output.
What this check can verify
- C2PA Content Credentials and readable file metadata.
- Any future Google verification capability once an authoritative integration is available.
What it cannot verify
- Google's production SynthID watermark without an authorized detector.
- Gemini-generated text through a generic classifier.
How to interpret your results
Google's production detector is provider-controlled. This product reports that verification is unavailable rather than simulating a SynthID result.
Absence of evidence is not evidence of absenceNo supported signal detected does not prove a file was created by a human. Metadata and credentials can be removed by screenshots, re-saving, editing, social media compression, or unsupported export tools.
Frequently asked questions
Can this detect Gemini text?
No. It does not claim public detection of Google's production text watermark.
Why show unavailable?
It is more honest than presenting metadata or a classifier as an authoritative watermark result.