Google Opens SynthID Detector to the Public for AI-Media Checks

Google published its SynthID Detector announcement on October 7, 2026. The company said the standalone tool is now available globally in English, expanding a version that had previously been offered to media professionals.

The detector lets people check images, video and audio for SynthID signals. Google says those signals can identify media made with its AI tools or with participating partners, including OpenAI, NVIDIA and Kakao, with Apple support described as coming soon.

What a SynthID check covers

SynthID uses imperceptible watermarks rather than a visible label. Google says it has applied those watermarks to more than 180 billion images and videos and to 240,000 years of audio content since launching the system in 2023.

The partner list defines an important limit. The announcement describes checks for Google media and content from participating companies; it does not claim coverage for AI files outside that group or provide accuracy figures for every supported format.

Google also says related verification features in Search, the Gemini app and Chrome now handle more than 1 million requests a day. The public detector brings that broader provenance effort into a standalone tool that people can use directly.