Verify files
Check supported images, PDFs and videos for C2PA manifests, signature validation and certificate-chain status.
C2PA verification tool
Verify C2PA Content Credentials locally
Use C2PA Signer as a local-first entry point for checking supported media and page content. The extension reviews provenance and integrity signals without uploading selected files to a C2PA Signer backend.
TrustedSigned but untrustedInvalidNo credentialsNot fake detection
Scan web pages
Run a user-triggered scan on visible page media, then compare status badges and open the full report.
Export evidence
Use report details and JSON exports for editorial review, compliance notes or provenance documentation.
Interpretation
A verifier for evidence, not truth claims
C2PA Signer helps determine whether technical provenance evidence exists and whether it validates. It does not decide whether visual content is real, fake or AI-generated.
Trusted
Valid C2PA evidence plus a recognized trust-chain context.
Signed but untrusted
Signed evidence exists, but public trust is not established.
Invalid
C2PA evidence exists, but signature or integrity validation failed.
No credentials
No C2PA evidence was detected. This is not a fake-content verdict.