The screenshot still carries the Gemini tag, here is the detector.
When you screenshot a Gemini image, the hidden SynthID watermark stays embedded in the pixels. Google DeepMind docs confirm that crops or screenshots don’t erase this tag, so simple tricks won’t hide it.
- Screenshot still carries hidden SynthID tag
- Pixel-level watermark survives crops and screenshots
- Google DeepMind docs verify persistence
- Check the screenshot inside Gemini and read whether it finds the SynthID tag
Run this yourself
Follow these four quick steps to see the hidden tag in action.
Capture a Gemini image
Open Gemini and ask it to generate any picture you like.
Take a screenshot
Screenshot the result. The SynthID tag is designed to survive screenshots, crops, and compression.
Upload the screenshot in Gemini
Drop the screenshot back into Gemini and ask, "Was this made or altered by Google AI?"
Read Gemini's answer
Gemini reports whether it finds the SynthID tag. The check is not perfect.
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