Gemini Watermark Remover
Free online tool to remove Gemini watermarks, logos, and star overlays.
No upload, no sign-up — 100% local, private processing.
Pixel-accurate restoration, not AI guesswork
Reverse alpha blending reconstructs the pixels under the Gemini logo from a calibrated alpha map. On supported Gemini outputs, the covered area is restored pixel-for-pixel — no model repaint, no soft edges.
Try it freeHow to remove a Gemini watermark online
Upload your photos
Drop common Gemini JPG, PNG, and WebP outputs with visible watermarks. Batch uploads are supported.
Auto-remove watermark
Reverse alpha blending reconstructs covered pixels in-browser. No upload to any server.
Download clean images
Save watermark-free photos as lossless PNG. Download individually or bundle as ZIP.
Complete Google Gemini watermark removal toolkit
Pixel-accurate restoration · bulk automation · 100% local processing · browser, terminal, and agent workflows in one open-source project.
Reverse alpha blending, not AI inpainting
A calibrated alpha map reconstructs the pixels under the Gemini logo. On supported outputs, the covered area is restored pixel-for-pixel — no soft edges, no model repaint.
Covers Gemini logo, star overlay, Nano Banana
Detects the standard Gemini logo, the star overlay variant, and Nano Banana image outputs that share the same overlay pattern. Other watermark sources are out of scope.
Bulk parallel processing
Drop multiple Gemini photos at once, process in parallel in-browser, then download individually or as a single ZIP.
100% browser-local — zero uploads
All computation stays in your browser. Images never leave your device, no server involved.
JPG, PNG, WebP in supported Gemini output sizes
Accepts JPG, PNG, and WebP from supported Gemini outputs. Exports lossless PNG.
Chrome extension / userscript
Install once and Gemini pages are patched automatically — previews swap in real time, native Copy and Download output clean results.
CLI & SDK for developers
Run via pnpm dlx (zero install) or the global gwr command. Use --out-dir for bulk export and --json for CI/CD pipelines.
Cross-platform
Verified on Chrome, Firefox, Safari, and Edge, including mobile. CLI covers Windows, macOS, and Linux.
Free, open source, no sign-up
MIT licensed, no usage limits, no account required. 4k+ GitHub Stars and growing.
Need another workflow?
Pick the path that matches where you already work — Gemini page, terminal, or agent.
Remove watermark nowUserscript for Gemini pages
Keep cleanup inside Gemini with Tampermonkey or Violentmonkey. Preview, copy, and download actions can use clean images.
Userscript for Gemini pagesCLI tool
Built for local batch jobs and CI automation
CLI toolAI Agent Skill
Give AI agents a reusable Google Gemini watermark removal capability
AI Agent Skill Frequently
asked
questions
Is this Gemini watermark remover completely free?
Yes. No account, no payment, no usage cap, and no sign-up. The project is open source under the MIT license.
Are my photos uploaded to a server?
No. Everything runs locally in your browser. Your images stay on your device and are never sent anywhere.
How does the watermark removal actually work?
It uses reverse alpha blending. A calibrated alpha map reconstructs the pixels hidden by the Google Gemini logo watermark — no AI model repaints the image.
Is this a Gemini watermark cleaner or an AI image editor?
It is a Gemini watermark cleaner for supported Gemini output patterns, not a general AI editor. It targets the visible Gemini logo or star overlay and leaves unrelated image edits out of scope.
How do I remove a Gemini watermark from an image?
Drop the supported Gemini image into the online tool, let the browser-local cleanup run, and download the cleaned PNG. The original image stays on your device.
How do I remove the Gemini logo from an image?
Upload the supported Gemini image to the tool, wait for the browser-local cleanup, then download the cleaned PNG. For many files, use the CLI with --out-dir so the original folder stays separate.
Can I bulk remove Gemini watermarks?
Yes. The online tool accepts multiple files at once and processes them in parallel. For large batches, use the CLI with --out-dir to export an entire folder.
When should I use the CLI?
Use it for large local bulk jobs, CI/CD automation, or developer workflows. Supports --json structured output and directory-based export.
Does it work on Nano Banana, star overlay, or other Gemini variants?
Yes for the visible Gemini logo and the current star overlay. Nano Banana outputs are covered when they share the same overlay pattern. If a result is not handled, open a GitHub issue with the screenshot.
Can it remove every kind of watermark?
No. It targets Google Gemini's visible logo watermark only. It does not remove invisible SynthID signals or watermarks from other sources.
Ready to remove
Gemini watermarks for free?
Open source, browser-local, no sign-up. Start in seconds.