Cryptographic provenance check
C2PA Viewer
Check a file for signed Content Credentials and inspect the active manifest.
SupportedJPEG · PNG · WebP · MP4 · PDF (library support varies)
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Processed in this tab. Nothing is uploaded.Useful details, without the lecture.
- Uses the official browser C2PA verifier.
- Reports manifest, assertion, ingredient, and action details.
- Distinguishes verified, invalid, missing, and unsupported results.
- Loads the verification engine only on this page.
What this result cannot prove
- No credential does not mean a file is fake.
- A valid signature does not prove every visible or written claim is true.
- Supported formats and trust behavior follow the current official WebAssembly library.
Quick answers
What does Verified mean?
A manifest was found and cryptographically associated with the current file. It is evidence of integrity, not a universal truth stamp.
What does Not Found mean?
No C2PA manifest was detected. Many authentic files do not use Content Credentials.
Is the file uploaded for validation?
No. The verifier and its WASM code run in your browser and release the reader after the check.