OpenDetect
Free AI image detector that shows its evidence
See OpenDetect in action
About
OpenDetect tells you whether an image was made with AI, and shows the evidence instead of a made-up percentage score. Drop in an image and it checks three signals a file can't easily fake: Content Credentials (C2PA), the file's metadata, and OpenAI's SynthID watermark. Each one is shown separately, in plain words, along with what it means when a signal is…
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OpenDetect tells you whether an image was made with AI, and shows the evidence instead of a made-up percentage score. Drop in an image and it checks three signals a file can't easily fake: Content Credentials (C2PA), the file's metadata, and OpenAI's SynthID watermark. Each one is shown separately, in plain words, along with what it means when a signal is missing. It reads PNG, JPEG, WebP and HEIC images, the file stays on your device, and there's no sign-up. Up to 10 free OpenAI watermark checks a day.
- Category
- Engineering & Development, Productivity
- Available on
- web
- Launched
- October 20, 2026
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