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Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →Upload the image to Gemini and ask whether it was created or edited by Google AI. Gemini checks for Google’s invisible SynthID watermark: a detected mark indicates that Google AI made or edited all or part of the image. No mark does not rule out an image made with another AI system.
Check an image in Gemini
- Open Gemini and sign in. Use the Gemini website or app with a personal account or an eligible Google Workspace account. If using the mobile app, Google says to install its latest version.
- Add the image file. The current Google help page allows one file per check, up to 100 MB. Use the original image when possible; a screenshot or heavily altered copy may be harder to assess.
- Ask a direct question. For example: “Was this image created or edited by Google AI?” You can also ask, “Is this AI-generated?”
- Interpret the response narrowly. A SynthID detection is evidence of Google AI involvement, not a verdict that every part of the image was generated. No detection means Gemini did not find the Google watermark; it does not test for every AI system.
For a screenshot, Google recommends cropping tightly around the image rather than submitting a collage of separate images. If Gemini’s response is unclear, keep the original file and use other clues as supporting evidence.
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What Gemini’s result does—and does not—tell you
If SynthID is detected
SynthID is an invisible watermark embedded in content generated by Google AI models. Google says a detected watermark means all or part of an image or video was created or edited by its AI models. A positive result therefore points to Google AI provenance; it does not establish that the whole image is synthetic or identify which specific elements were changed.
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A negative result is not proof that a picture was made by a camera or that no AI was involved. Gemini’s check is designed to identify Google AI content, not to detect output from every image generator. The absence of a watermark also cannot authenticate a file as an untouched original.
If the result is unclear
Google lists several reasons a watermark check may not give a clear answer: an image may be too simple or abstract to watermark, an edit may be too small to carry a detectable mark, or repeated alterations may interfere with detection. Google says the watermark usually survives resizing, recoloring, compression, and other changes, but many alterations can make it harder to detect. Treat an unclear response as inconclusive, not as a positive or negative verdict.
How Content Credentials differ from SynthID
Gemini may also be able to summarize Content Credentials when compatible credentials are present. These can describe a file’s origin and edit history, including whether AI was used. They are a provenance record, not proof that an image is definitely AI-generated. Unlike SynthID’s specific Google-AI watermark check, credentials can record history across compatible products and may include AI or non-AI tools.
| Signal | What it can establish | What it cannot establish |
|---|---|---|
| SynthID check | A detected mark indicates Google AI created or edited all or part of the image. | A missing mark does not exclude other AI systems, and a positive mark does not mean every part was AI-made. |
| Content Credentials | When compatible credentials exist, they can describe origin and edit history. | Credentials do not by themselves prove that the file is AI-generated. |
Google’s Gemini Apps Help page lists Content Credentials verification on gemini.google.com and in the Android Gemini app; it describes iOS availability as forthcoming. Availability can vary as Google rolls out features, so check the Gemini Apps Help page for current platform details.
Use other clues when the answer matters
Visual inspection, reverse image search, and file metadata can add context, but none is conclusive alone.
- Inspect the image: Look for garbled text, errors in small details, inconsistent shadows or lighting, and unnaturally repetitive patterns. These may raise questions but can also appear in ordinary photographs or edits.
- Search for earlier versions: A reverse image search may locate the original or similar images and help establish where a copy came from.
- Check the original file’s metadata: EXIF information may include a camera model, date, or settings; metadata may also name editing software. Metadata can be missing or altered, so it is not a guarantee of authenticity.
For a consequential decision, combine the Gemini result with the image’s source, available credentials, and corroborating context rather than relying on a single signal.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Current Gemini limits and availability
Google’s help page says the image verifier is available to signed-in Gemini users with a personal or qualified Workspace account. It lists one image per check and a 100 MB maximum. The same page gives an approximate rolling 24-hour quota of 10 image checks. These limits and platform details may change; consult the Google Gemini Apps Help page for the latest terms.
In a May 19, 2026 update, Google said SynthID verification had been used 50 million times globally and announced expansion to Search and Chrome. The post also said C2PA Content Credentials verification was rolling out in Gemini, with Search and Chrome planned in the coming months. Those are dated rollout statements, not confirmation that the features are available to every account, device, or region today. See Google’s May 19, 2026 SynthID update for that announcement.
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