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Nano Banana Watermark Remover

Try removing a visible sparkle from Nano Banana images in your browser. Match the overlay automatically or mark an area for manual fill, with no upload.

  • No upload
  • No sign-up
  • No new watermark
  • PNG, JPG, WebP
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Gemini image · Actual local processing

A Gemini sparkle, before and after.

This tiger image is a test sample from the Gemini Watermark Remover open-source project. The result was processed with this site’s automatic image tool.

Original · Gemini sparkle
Original tiger image with a four-point Gemini sparkle at the bottom rightOriginal 96 by 96 pixel crop containing the Gemini sparkle
After · This site’s automatic tool
The same tiger image after this site’s automatic template removalThe identical crop after automatic processing, without retouching

The two detail crops show the same 96 × 96 area. Only the detected 48 × 48 watermark footprint was changed.

View original PNGView actual result PNG
Source
1iki / Gemini Watermark Remover
Image
1376 × 768 · PNG
Method
Template match + reverse alpha
Processed

Nano Banana image exports may carry a visible Gemini sparkle. The design and presence of that mark can vary with the export. This tool works on the visible overlay in your image.

Automatic mode tries 48 px and 96 px overlay templates and reverse alpha blending when a match is found. It does not guarantee recovery of the original pixels. If matching fails, draw a box and use manual fill to estimate the area from nearby pixels.

Processing runs locally in your browser with JavaScript. Nothing is uploaded, no account is required, and the result is a PNG at the original dimensions with no new watermark.

Start from the download, not a screenshot

Start with the original downloaded image. Screenshots, resizing and recompression can change the overlay and leave traces after processing. Inspect the result; manual fill is an alternative when matching fails.

Batches

One image is processed at a time. Processing time depends on the image, mode, browser and device.

Supported overlay templates

Auto mode tries 48 px and 96 px templates. Image width alone does not determine which one matches; edited or different logo variants may not be detected.

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A place for every edit.

Remove a logo, refine your footage, change a format or take the sound with you. Find the tool for your next step.

Frequently asked questions