Gemini Watermark Remover is a free, open-source browser tool for removing the visible Gemini mark from JPG, PNG and WebP images. Instead of generative filling, it uses reverse-alpha blending to mathematically restore the pixels beneath the mark. Everything runs locally – no uploads or accounts. Process one image or a batch, compare before and after, then export at your preferred JPEG quality or copy a lossless PNG.
Hey there! 👋
I built Gemini Watermark Remover after downloading an image from Google Flow and finding that its new visible watermark interrupted the image.
My first solution was a manual Pixelmator workflow. That worked, but repeating it for every image was slow. While researching a better approach, I learned that the watermark could be reversed mathematically using its known colour and transparency – without generative filling or AI inpainting.
That became this free browser tool. It processes JPG, PNG and WebP images entirely on your device, supports batches, provides a before-and-after comparison, and lets you control JPEG export quality. Nothing is uploaded, and no account is required.
I’d especially appreciate feedback on the output quality, browser performance and anything that would make the workflow more useful.
YM.dat