ChatGPT Watermark Detector

Scan any image for invisible C2PA / JUMBF metadata. Find out instantly whether it came from ChatGPT, DALL-E, or Sora. Nothing uploaded — all detection happens in your browser.

Drop your ChatGPT images here

JPEG · PNG · WebP — up to 50 images — Max 50 MB each

or click to browse

🔒 Detect C2PA Watermarks runs 100% locally. No upload.

What this detector finds

ChatGPT, DALL-E and Sora all embed a JUMBF box containing C2PA Content Credentials. The detector reads your file as raw bytes and looks for:

JUMBF magic bytes 6A 75 6D 62
ASCII markers: c2pa, jumbf, contentauthenticity, openai

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