AI image tools now attach signed Content Credentials to the files they make, and platforms read them the moment you upload. Check any file here before it goes up — it never leaves your device.
When an AI tool — or a C2PA-capable camera or editor — produces a file, it can attach a small, cryptographically signed note in the metadata saying which tool made or processed it. That's a Content Credential. YouTube already reads these at upload and can apply a "How this content was made" label automatically, without you disclosing anything.
This tool reads files. It cannot check text — AI text is watermarked inside the wording itself, and detection for that is currently restricted to regulators, researchers and platforms. What that means for scripts and descriptions is covered in the companion guide.