This free tool strips Google Gemini watermarks in milliseconds and never sees your image

A free online tool called Gemini Watermark Remover, offered by the platform Quick Image Fix, removes the visible star-shaped watermark from Google Gemini images in seconds. The tool runs entirely in the user’s browser, meaning no image data is sent to any server.

Every image generated by Google Gemini carries a semi-transparent star logo in the bottom-right corner. It is added through a standard graphics technique called alpha compositing, which blends the watermark with the underlying image using a fixed mathematical formula. Gemini applies this watermark in two fixed sizes: 48×48 pixels for smaller images and 96×96 pixels for larger ones. The position, shape, and opacity map never change.

That consistency makes removal mathematically possible. A researcher named Allen Kuo documented and open-sourced the approach. Because the watermark is applied through a known formula, running the formula in reverse recovers the original pixel values to within one digit of their original state, a difference invisible to the human eye.

This is fundamentally different from AI inpainting tools, which guess what lies beneath a watermark rather than calculating it. On textured surfaces, inpainting often introduces blurring or invented details.

The Quick Image Fix tool works in any browser, including on mobile devices. Because the calculation involves only basic arithmetic on a small number of pixels, it completes in milliseconds without requiring a server or GPU.

One limitation applies: images that were screenshotted, resized, or compressed by messaging apps before processing may produce imperfect results.

Also important: Every Gemini-generated image also includes an invisible watermark (SynthID). That one is not affected.