Free · no sign-up · no upload

Check Content Credentials

Drop a file and see whether it carries C2PA metadata: who generated it, when it was signed — and is it declared as AI-generated? Everything runs inside your browser.

Drag a file here or choose one

Image, video, audio or PDF · max. 60 MB

🔒 The file never leaves your browser. Everything is checked locally on your device.

Context

What this result does and does not tell you

A hit is solidContent Credentials are cryptographically signed. If a valid signature shows up, the stated originator is genuine and the file is unchanged since signing.

A miss is notMissing metadata proves nothing. It may never have been set, or it may have been stripped along the way — a screenshot is enough.

“Invalid” is a signalIf the check reports an invalid signature, the file was altered after signing. That can be harmless (cropping, compression) — or not.

This checker does not see watermarksMethods such as SynthID sit inside the content rather than the metadata and therefore survive more. Currently only Google itself can check them.

We continuously track which tools mark their output at all — currently 28 tools, 4 of them with a public vendor statement: see the overview →

FAQ

Frequently asked questions about the checker

Is my file uploaded?

No. The verification engine runs as a WebAssembly module inside your browser, loaded from our own server. The file itself is never transmitted to us or to third parties — so you can check an unpublished image too.

What does it mean if no Content Credentials are found?

Only that this file contains no C2PA metadata. It is not proof that the file was not made with AI. Metadata is attached to the file and is routinely lost through screenshots, messenger apps, re-uploads to social networks or format conversions.

Can the checker detect SynthID watermarks?

No. SynthID is a proprietary Google method; detection runs only through Google’s own detector portal, which is currently limited to journalists and researchers. This checker reads the open C2PA standard only.

Which file formats work?

Common image formats (JPEG, PNG, WebP, AVIF, TIFF, GIF, HEIC, SVG) plus video, audio and PDF. The file should be the original — a copy sent via WhatsApp or saved from a preview has usually lost its metadata already.

The checker uses the open-source c2pa-web SDK from the Content Authenticity Initiative (MIT licence).