Remove the Gemini Watermark, Pixel-Perfect
Reverses the alpha-compositing Gemini applies to free-tier images. No AI inpainting, no guessing — just the exact inverse of the blend equation, computed in your browser.
For images you generated. Respect AI-provenance labeling where required. Verify your use complies with Gemini's terms of service.
How it works
Gemini stamps the visible star logo by alpha-compositing a fixed, known white logo onto your image:
watermarked = α × logo + (1 − α) × originalBecause α and the logo are constants (only two variants, one for images up to 1024 px and one for larger), the blend is exactly invertible:
original = (watermarked − α × logo) / (1 − α)This tool reads the watermark rectangle from your image, applies the inverse formula per pixel, and writes the clean pixels back. Precision is ±1 per RGB channel — invisible to the eye. Before running, it samples the rect and verifies the pixels look like a Gemini stamp; if they don't, it stops rather than mangle the corner.
The rest of your image is not touched.
Privacy
Everything runs locally in your browser. Your image is never uploaded to any server — not LogoNuri's, not anyone's. You can disconnect from the internet after the page loads and the tool will still work.
Credits
The alpha maps and core algorithm are adapted (MIT license) from the open-source gemini-watermark-remover project, which in turn credits journey-ad/gemini-watermark-remover.