Pixel-accurate restoration
No AI guesswork — stronger watermark detection and reverse alpha blending restore the original pixels under the watermark. No repaint, no blur.
How to remove a Gemini watermark online
Step 1
Upload your photos
Drag or select watermarked images (JPG, PNG, WebP). Batch supported.
Step 2
Auto-remove watermark
Runs in-browser, reverses the watermark overlay to restore original pixels. Fully local, lossless.
Step 3
Download clean images
Download clean images as lossless PNG — one by one or as a ZIP.
Complete Google Gemini watermark removal toolkit
Reverse alpha blending, not AI inpainting
Uses stronger watermark-region detection and calibrated alpha maps to reconstruct pixels under the watermark — no model repaint, no soft edges.
Covers Gemini logo, star overlay, Nano Banana
Handles Gemini logo marks, star overlays, and Nano Banana watermark variants in supported image outputs.
100% browser-local — zero uploads
All computation stays in your browser. Images never leave your device.
All formats · all resolutions
Accepts JPG, PNG, and WebP input at any Gemini resolution. Exports lossless PNG.
Need another workflow?
Pick the path that matches where you already work: Gemini page, video cleanup, terminal, or agent.
- Userscript for Gemini pages: Keep cleanup inside Gemini. Preview, copy, and download actions automatically use clean images.
- Gemini video watermark remover: Remove Gemini watermark from video locally in the browser, with a CLI fallback for larger MP4, WebM, and MOV files.
- CLI tool: Built for local image batches, video cleanup, and CI automation. Supports pnpm dlx for zero-install runs.
Frequently asked questions
Is this Gemini watermark remover completely free?
Yes — completely free, no limits, no sign-up. MIT-licensed open source.
Are my photos uploaded to a server?
No, processing is 100% local within your web browser.
How does the watermark removal actually work?
It uses reverse alpha blending. We calculate the exact mathematical inverse of the semi-transparent watermark and re-apply it to perfectly restore the original pixels underneath without blurring or AI hallucination.
Does it work on Nano Banana, star overlay, or other Gemini variants?
Yes! It is programmed to detect and reverse all known Google Gemini watermarks including the new Nano Banana and standard Star Overlays.