How does the Gemini Watermark Remover work?

The tool uses reverse alpha blending, a mathematical method to restore the original pixel values. Since the Gemini watermark is a semi-transparent white logo, the original color can be calculated.

Are my images uploaded to a server?

No, all images are processed 100% locally in your browser. No image data leaves your device. The tool only requires a brief connection for usage verification.

Are invisible watermarks (SynthID) also removed?

No, this tool only removes the visible Gemini watermark. Invisible watermarks (SynthID) remain in the image and cannot be removed. SynthID is a watermark developed by Google DeepMind that is embedded in the image data and is not visible to the human eye.

Which image formats are supported?

The tool supports PNG, JPG, JPEG and WebP. The maximum file size is 10 MB per image.

Why does my image look slightly different after processing?

In areas where the watermark was very strong, the reconstruction cannot be perfect. This is because information is irretrievably lost at high transparency levels.

100% Free

Gemini Watermark Remover

Remove visible watermarks from images created with Google's Gemini App

100% Private

All images are processed locally in your browser. No data is sent to any server.

Select mode

Choose whether to process a single image or multiple images at once.

Upload Image

Upload an image created with Gemini

Drag an image here or click to select

PNG, JPG, JPEG or WebP (max. 10 MB)

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Frequently Asked Questions

Everything about the Gemini Watermark Remover

Changelog

The latest updates and improvements to our Gemini Watermark Remover

v1.3.0July 13, 2026

More accurate detection on dark image backgrounds

Genuine watermarks over darker image areas are now detected and removed more reliably instead of being incorrectly skipped as a false match
The safeguard against dark artifacts on genuine false matches remains fully active
Screen reader label for the clear button

v1.2.2July 10, 2026

No more artifacts on images without a watermark

Images without a real Gemini watermark are detected more reliably: instead of stamping a dark star-shaped blotch onto the image, the tool now reports "no watermark detected"
Genuine watermarks (including faint ones on busy backgrounds) are still fully removed

v1.2.1July 4, 2026

Cleaner removal on busy images

Watermarks on detailed, bright subjects (such as close-up photos) are now fully removed instead of leaving a faint double image
Fine alignment no longer follows image noise when the watermark barely stands out from the background

v1.2.0July 3, 2026

New Gemini watermark (June 2026)

Support for the new Gemini watermark Google rolled out in late June 2026 (more transparent and placed further from the image edge)
Older Gemini watermarks are still detected and removed
New plausibility check: on ambiguous images the tool now reports "no watermark detected" instead of drawing a dark artifact into the image
More stable position detection on busy backgrounds

v1.1.0June 19, 2026

Bulk processing

New bulk mode: upload and process multiple images at once
Mode toggle between single and bulk processing
Drag-and-drop support for multiple files
Per-image status (pending, processing, done, error)
"Download all" with staggered download
Per-image removal and "Clear all" for the image list

v1.0.0January 13, 2026

Official Launch

Reverse alpha blending for watermark removal
100% local processing in the browser
Support for PNG, JPG, JPEG and WebP
Automatic watermark detection
Responsive design for all devices