Local provenance tool
Free Content Credentials Marker Checker
What this tool does: it checks the image container for an embedded C2PA marker. The file stays in your browser. Marker presence does not validate the manifest or signer, and marker absence does not show that the image is synthetic, deceptive or edited.
Runs locally in your browser
Check an image container
This check reads the selected file in browser memory. It does not upload the image or retain a copy.
Marker detection is only the first step
| Check | This tool | Cryptographic validator |
|---|---|---|
| Find supported embedded marker | Yes | Yes |
| Parse manifest assertions | No | Yes |
| Validate signature and content binding | No | Yes |
| Evaluate signer trust | No | Only against a defined trust policy |
| Decide whether the depicted event is true | No | No |
What should you do next?
If a marker is found, use a C2PA-compatible cryptographic validator and inspect the exact assertions, validation state and signer. If no marker is found, ask for the original asset or an external manifest before concluding that provenance is unavailable.
Read Content Credentials explained for the difference between presence, validity and trust. The current What Made It? methodology treats missing credentials as neutral evidence.