Check an invisible trace watermark

Upload a suspect image and use the same key and strength that were used at embedding time. Robust mode also searches a limited resize range.

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No upload · processing stays in this browser

01

Choose an image

↥Choose an imageUses the built-in sample until you choose a file

02

Settings

Demo key (at least 16 bytes)

Check trace watermarkExport detection result

Live result

Result preview

Ready

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What a result means

This checks only React Native Image Marker’s dct-qim-v1 frame. It cannot find SynthID or arbitrary watermarks and it is not an AI-image detector. “Detected” means the frame passed its format, CRC, and authentication checks; edits may still have occurred.