Verify files
Drop supported media into the extension to inspect Content Credentials, manifest data and integrity results.
C2PA verifier
C2PA Verifier — Verify Content Credentials Locally
C2PA Signer helps you inspect C2PA manifests, signatures, certificate information and provenance signals without uploading selected files to a C2PA Signer backend.
Local-first verificationJPG, PNG, PDF, MP4Trust-chain reportNot fake detection
What it verifies
From media file to C2PA status
The extension reads available C2PA evidence and explains the result with the same four statuses across the site.
Trusted
Valid Content Credentials plus a recognized certificate chain.
Signed but untrusted
A valid signature where the certificate is not publicly trusted.
Invalid
C2PA data exists but integrity or signature validation failed.
No credentials
No C2PA evidence was detected. This is not a verdict that content is fake.
Scan pages
Analyze visible media on the current tab only when you request it, then review status badges and reports.
Explain reports
Read manifest actions, signature data, certificate-chain information and exportable JSON for review workflows.