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SynthID Detector
Check images, video and audio for hidden AI watermarks in seconds.
What is SynthID Detector?
SynthID Detector is Google's public verification portal for AI-generated media. Upload an image, video, or audio file and it looks for the invisible SynthID watermark that Google and its partners embed when content is created, then tells you whether a recognized mark is present.
It opened to everyone globally in English on October 7, 2026, after an earlier limited test with journalists and researchers. It is not a general AI detector — it can only identify media from tools that use SynthID, which now includes Google's own generation models and partners OpenAI, NVIDIA, and Kakao, with Apple support planned. The same checks are also built into Google Search, the Gemini app, and Chrome.
Key Features
- Checks uploaded images, video, and audio for SynthID watermarks from Google and partner models
- Covers output from OpenAI, NVIDIA, and Kakao as well as Google models (Apple support planned)
- Broad format support including JPG, PNG, HEIC, GIF, MP4, MOV, WEBM, MP3, WAV, and FLAC
- Same verification is built into Google Search, the Gemini app, and Chrome
- Free public access at synthid.com (opened to everyone October 7, 2026)
Pros
- Free and instant — upload in the browser with no software to install
- Partner coverage goes beyond Google-only content
- Useful first check before sharing or publishing questionable media
Cons
- Only detects SynthID-watermarked media — it is not a general AI detector
- Cannot distinguish fully AI-created media from AI-edited media
- Requires sign-in to use the portal
Pricing
- Model: Free
- Free to use globally in English — check the official site for current access details.
Adding Up Your AI Bill?
If you pay for SynthID Detector alongside other AI subscriptions, the monthly total adds up quietly. Tick every tool you pay for in our free AI Tool Cost Calculator to see your real monthly and yearly bill — and spot overlaps you can cut. Still choosing? Start with our guide on how to choose the right AI tool.
How We Rated It
Scores reflect our editors’ independent assessment at the time of review.
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