Gemini Watermark Remover & Clean Eraser
Gemini & Nano Banana
Watermark Remover
Quickly remove Gemini icons and Nano Banana watermarks from your images. Falls back to edge-preserving brush diffusion for general stamps and logos.
Upload image with watermark
Drag and drop an image here, or click to browse. Erases watermarks in seconds.
Supports: PNG, JPG, JPEG, WEBP up to 25 MB
Gemini & Nano Banana Watermark Remover Features
Advanced on-device reverse alpha blending delivers lossless restoration with exact color recovery.
Gemini Nano AI Detection
Detects 32px, 48px, and 64px corner marks from Gemini and Imagen models, targeting the alpha stamp automatically.
Quality Preservation
Mathematically solves for original RGB channels without downsampling, neural hallucination, or blurry edges.
Lightning Fast & Private
Executes 100% inside your browser in under 50ms. Zero file uploads to servers and zero registration required.
How Gemini Watermark Remover Works
Clean and simple 4-step workflow to restore your images losslessly.
Upload Image
Drag & drop PNG, JPG, or WebP up to 25 MB.
Target Corner Scan
Locates Gemini & Imagen semi-transparent corner alphas.
Reverse Alpha Solved
Recovers original underlying RGB values in milliseconds.
Download Clean Image
Download full resolution PNG, WebP or JPEG.
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How to remove Gemini and image watermarks
- Gemini AI Auto-Clear: Upload any image generated by Google Gemini or Imagen. The tool automatically locates the watermark in the bottom-right corner and mathematically reverses the alpha transparency in milliseconds.
- Custom Brush Eraser: Switch to the Brush Eraser tab to paint over date stamps, captions, or logos anywhere on your photo, then click Erase to blend the background seamlessly.
- Compare and Download: Use the interactive Before & After split slider to inspect the cleaned area, then download your full-resolution result as a PNG, JPG, or WebP.
Frequently Asked Questions
How does the Gemini Watermark Remover achieve lossless quality?
Standard watermark removers use generative inpainting, which blurs or hallucinates replacement pixels. For Gemini AI images, Google applies a semi-transparent watermark overlay with a fixed alpha mask. Our engine detects this pattern and solves the mathematical Reverse Alpha Blending equation directly, restoring the true original RGB pixel values without any blurring.
Are my private photos uploaded to a cloud server?
No. All pixel calculations and canvas operations execute 100% locally on your computer or phone using client-side JavaScript. No image data is ever uploaded to SIRF servers or third-party cloud providers.
Can I remove watermarks other than Gemini?
Yes. The Brush Eraser mode allows you to paint over any unwanted object, date stamp, camera watermark, or subtitle bar on your image. It applies an adaptive multi-pass boundary diffusion algorithm to reconstruct the background cleanly.
What image formats and file sizes are supported?
You can upload PNG, JPG, JPEG, and WebP images up to 25 MB and dimensions up to 8192×8192 pixels.