Drop image here
Drag & drop or click to browse. Supports PNG, JPG, WebP.
Mathematical Precision
Uses reverse alpha blending formula to restore original pixels exactly. No AI hallucination or guessing.
100% Private
Your images never leave your device. All processing happens locally in your browser for complete privacy.
Instant Processing
No uploads, no waiting. Remove watermarks instantly with our optimized browser-native algorithm.
Auto Detection
Automatically detects 48×48 or 96×96 watermark variants based on your image dimensions.
Reverse Alpha
Blending Algorithm
Gemini applies watermarks using standard alpha compositing. We reverse the formula mathematically to restore the original pixel values with zero loss - no AI inpainting needed.
Gemini adds:
watermarked = α × logo + (1 - α) × original
We reverse:
original = (watermarked - α × logo) / (1 - α)
Lossless Restoration
How to Use
Simple steps to remove Gemini watermarks
Upload Image
Drop any Gemini-generated image with a watermark (PNG, JPG, WebP).
Auto Process
The algorithm automatically detects and removes the watermark instantly.
Download
Save your clean image as a high-quality PNG without any watermark.
⚠️ Disclaimer
This tool is provided for educational and personal use. Use at your own risk. The tool modifies image files - while designed to work reliably, unexpected results may occur. The author assumes no responsibility for any data loss or unintended modifications.