# Gemini can check a file for Google’s SynthID watermark

By Steven Van · 2026-10-27

Signed-in users can ask Gemini whether an image, video or audio file has Google's SynthID mark, though it only recognizes Google AI content.

Signed-in [Gemini](<https://creatorstoolbox.com/tools/gemini>) users can now ask whether an image, video or audio file carries Google's SynthID watermark. [Gemini said on October 27](<https://x.com/GeminiApp/status/2115171788812669225>) that the check is available by asking the assistant about a file.

## What the check covers

Gemini's Help says the check recognizes Google AI content only. A file made with another company's AI tools is not identified by it.

## What a result does and does not show

A missing SynthID watermark is not proof that a file was not made with AI. It also does not prove the file is human-made. The check can confirm Google's watermark when it is present, but it cannot rule out AI generation when the watermark is absent.

[Source post](https://x.com/i/status/2115171788812669225)

![Google Gemini](<https://www.gstatic.com/lamda/images/gemini_sparkle_aurora_33f86dc0c0257da337c63.svg>)

Google Gemini

Google's AI assistant — write, plan, brainstorm, generate images, and analyze files with one of the most powerful multimodal models.

[View Google Gemini →](<https://creatorstoolbox.com/tools/gemini>)

Sources

[Original source](<https://x.com/GeminiApp/status/2115171788812669225>)

[Read Gemini can check a file for Google’s SynthID watermark on Creators Toolbox](<https://creatorstoolbox.com/blog/google-gemini-gemini-can-check-a-file-for-google-s-synthid-watermark>)

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Canonical source: https://creatorstoolbox.com/blog/google-gemini-gemini-can-check-a-file-for-google-s-synthid-watermark