Google has opened a dedicated SynthID website that lets anyone check images, video or audio for invisible AI watermarks. The detector now recognizes partner implementations of SynthID, expanding beyond content produced by Google’s own Gemini models.
Supported partners include OpenAI, Nvidia and Kakao, with Apple listed as coming soon. Previously, people outside Google’s trusted tester program generally had to ask Gemini to inspect a file, and that process could return a conversational answer instead of a simple result. The new website provides a direct upload-and-check workflow.
SynthID encodes signals into image pixels, video and audio waveforms. Google says Gemini products have applied it to more than 180 billion images and videos and the equivalent of 240,000 years of audio. A positive detection can establish that a participating system marked the file, but a negative result cannot prove that media is authentic: many generators do not use SynthID, and transformations may affect detectable signals. The wider partner support makes the tool more useful, while its scope remains limited to compatible watermarking systems rather than all synthetic media.