Gemini Watermark Remover
Built a privacy-first browser tool that removes the visible Gemini sparkle watermark from AI-generated images and MP4 videos without uploading files to a server. It detects the watermark with normalized cross-correlation, reverses the alpha blend in Canvas, and uses WebCodecs for frame-by-frame video processing while preserving the original audio track.
🖼Screenshots
✏About Project
A free browser-based utility for removing the visible Gemini, Veo, Imagen, Nano Banana, and Google Flow sparkle watermark from images and MP4 videos. Files remain on the user's device: image processing uses Canvas, and video processing uses WebCodecs in supported Chromium browsers.
⚡Engineering Highlights
The visible sparkle watermark can appear across supported exports and resolutions.
Used normalized cross-correlation to locate calibrated alpha masks, then applied reverse alpha blending with edge diffusion to restore the affected pixels.
Automated cleanup without manual selection, cropping, or a remote image-processing service.