100% Client-Side • Images never leave your device
Remove Gemini Watermarks Instantly
Remove the semi-transparent star watermark from Gemini AI-generated images using pixel-perfect reverse alpha blending. Free, unlimited, runs entirely in your browser.
100% Browser-Based and Free
or drop files — batch supported
PNG, JPG, WebP — max 50 MB
Features
Reverse Alpha Blending
Mathematically precise watermark removal. Restores original pixel values with ±1 error — completely imperceptible.
Auto-Detection
Automatically detects the Gemini star watermark in the bottom-right corner. Skips processing if no watermark is found.
Batch Processing
Drop multiple images at once. All processed simultaneously in Web Workers for maximum speed.
Platform Guides
FAQ
Does this remove the invisible SynthID watermark?+
No. This tool removes the visible star watermark overlay only. The invisible SynthID watermark embedded at the pixel level remains intact. This tool is for aesthetic cleanup, not for bypassing content authenticity measures.
Is it free?+
Yes, completely free with no limits. No signup, no account, no hidden fees. Processing happens in your browser — we don't even have a server to charge you for.
Does it work on other AI watermarks?+
Currently optimized for Gemini's specific star watermark pattern. We're adding support for other AI platform watermarks in future updates.
Will my images be uploaded anywhere?+
No. All processing happens locally in your browser using JavaScript. Your images never leave your device. You can verify this by using the tool while offline.