Google · Gemini app, Nano Banana

Remove Metadata from Gemini and Nano Banana Images

Google marks images from the Gemini app and its Nano Banana models in up to three ways: a signed C2PA manifest, the SynthID watermark inside the pixels, and on some accounts a visible sparkle in the corner. BlankAI removes the manifest and other metadata. SynthID and the sparkle are part of the image and stay.

Runs in your browser. Nothing is uploaded. Reviewed September 25, 2026

Check a Gemini image

Drop a Gemini or Nano Banana download to see its Content Credentials before cleaning.

Drop images here or click to choose

JPG, PNG, WebP, AVIF, HEIC · Up to 20 images · Nothing is uploaded

EXIFGPSXMPIPTCC2PAPNG text

What Google puts in Gemini images

Layer	Present	Details	BlankAI
C2PA Content Credentials	Yes	Google says all media made in the Gemini app includes Content Credentials. Nano Banana Pro images from Vertex AI and Google Ads carry them too.	Removed
EXIF / XMP / IPTC label	Sometimes	Little outside the manifest in most downloads. The AI source type is recorded in the C2PA actions.	Removed
Invisible watermark	Yes	SynthID is applied to all Google-generated media and cannot be turned off.	Not removed
Visible sparkle	Sometimes	Since 14 August 2026 most users can turn it off for new images under Settings, Media Watermark. In India, South Korea and Vietnam only AI Ultra users can; work and school accounts cannot.	Not removed

How Google labels Gemini images

SynthID is Google's invisible watermark. Google says more than 100 billion images and videos carry it, and in May 2026 it put SynthID checks into the Gemini app, where you can upload an image and ask whether it is AI-generated, with checks in Search and Chrome rolling out. Google reported more than 50 billion Nano Banana images at I/O 2026, and released the faster Nano Banana 2 Lite on 30 June 2026.

C2PA credentials sit on top of the watermark. Google added them to Nano Banana Pro output in late 2025 and now says every image made in the Gemini app includes them.

The visible sparkle

The sparkle is drawn onto the image, so no metadata tool removes it. If your account allows it, turn off Media Watermark in Gemini's settings before you generate; the setting applies to new images only.

What cleaning is useful for

Cleaning removes the manifest and any other metadata, which matters for privacy and for workflows that expect plain files. It does not hide the image's origin: SynthID remains, and since OpenAI also uses SynthID, Google's checks recognize images from both companies.

How to remove metadata from a Gemini image

1Download the image from the Gemini app or AI Studio and drop it into the tool above.
2Check the report for a C2PA manifest that mentions Google.
3Select Remove Metadata and save the clean copy.
4If you want to see what Google can still detect, upload the clean copy to the Gemini app and ask whether it is AI-generated.

What BlankAI removes, and what it does not

The same rules apply to every file, whatever made it. BlankAI cleans the metadata that travels with a file. It cannot reach anything that is part of the image itself.

Layer	Where it lives	What it holds	BlankAI
EXIF and GPS	File metadata	Camera or phone model, serial numbers, capture time and location coordinates.	Removed
XMP and IPTC	File metadata	Creator tool, edit history, captions, credits and the IPTC Digital Source Type AI label.	Removed
C2PA Content Credentials	Signed manifest inside the file	Who or what created the file and how it was edited, signed by the issuing app.	Removed
PNG text chunks	File metadata	Stable Diffusion prompts, seeds and model names, ComfyUI workflows.	Removed
Invisible watermarks	The pixels	SynthID (Google and OpenAI images), Meta's Content Seal, TikTok and ByteDance watermarks.	Not removed
Visible watermarks	The pixels	Logos, sparkle icons and corner badges drawn onto the image.	Not removed
AI classifiers	The platform	Models that judge an image by how it looks. File metadata plays no part.	Not affected

Questions

Can I remove the Gemini watermark?

There are two. The visible sparkle can be turned off in settings for new images on most accounts. The invisible SynthID watermark cannot be turned off or removed by a metadata tool.

Does Nano Banana add metadata to images?

Yes. Images made in the Gemini app carry C2PA Content Credentials, and all Google-generated images carry SynthID.

Does BlankAI remove SynthID?

No. BlankAI removes metadata only. SynthID is embedded in the pixels and survives cleaning.