Hey Product Hunt! 👋 I built Gemini Watermark Remover because I was frustrated with the visible watermarks Google adds to every Gemini-generated image. Even Gemini Pro subscribers still get watermarked images — only the Ultra tier removes them, but paying for Ultra just to get rid of watermarks feels like overkill. Existing solutions either rely on AI inpainting (which destroys details) or require uploading your images to third-party servers. So I took a different approach — mathematically exact Reverse Alpha Blending. Instead of guessing what's under the watermark, the algorithm precisely reverses the blending operation. The result is truly lossless removal, pixel-for-pixel identical to the original unwatermarked image. What makes it different: 🔒 100% local — nothing leaves your browser or machine 🎯 Mathematical precision, not AI hallucination ⚡ Auto-detects watermark size & position 🌐 Works as: online tool, Tampermonkey userscript (auto-removes on Gemini page), CLI, and npm SDK 📖 Fully open source (MIT) Try it now: Just drop an image at geminiwatermarkremover.io — no signup, no upload, instant result.

Gemini Watermark Remover

OpenSource Gemini Watermark Remover

OpenSource Gemini Watermark Remover