C2PA Metadata Checker
This is a lightweight in-browser scan for common C2PA / Content Credentials indicators inside an image. The image is read in your browser; nothing is uploaded.
Choose an image to scan.
Important: This tool performs a lightweight browser-side scan for common C2PA / Content Credentials markers. It is not a full validator. For a definitive answer, use the official Content Credentials Verify tool.
What this checker looks for
- JUMBF box markers — the binary container format C2PA uses to embed manifests inside files.
- C2PA label strings — well-known identifiers like
c2pa.assertions,c2pa.claim,c2pa.manifest, and thejumbftag. - Format-specific signals — JPEG
APP11markers, the PNGcaBXchunk, and RIFF chunks in WebP that commonly carry C2PA payloads.
What "no obvious markers" doesn't mean
A "no obvious C2PA markers found" result means this scanner didn't see the patterns it knows about. It does not mean the file is definitively free of provenance information. Reasons it could miss something:
- The file uses a container or marker format we don't scan for.
- The C2PA data is referenced externally (a "soft binding") rather than embedded.
- Pixel-level fingerprints or invisible watermarks are not detectable by a metadata scan.
For anything load-bearing — journalism, legal, evidentiary use — verify with the official Content Credentials Verify tool.
Related
- Remove C2PA metadata from a PNG or WebP image (browser-side).
- What is C2PA metadata? — a plain-language primer.
- Remove Content Credentials from an image — overview of the same workflow.